Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ff06370b047c6d…

MALICIOUS

PDF

87.0 KB Created: 2021-07-01 10:04:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: c5d0d8f9ff3dc5652019e3f88280e3be SHA-1: 7f182be7d5b8131200d23e466547befa40806b75 SHA-256: 80ff06370b047c6d9f3526afd55c35c48ca69dfd1a232dde7bf16c40057fec13
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious by ML models and ClamAV, and exhibits characteristics of an advance-fee scam. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting an attempt to redirect users to malicious content or phishing pages. The document body is heavily obfuscated, but the heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the presence of language related to lotteries, prizes, and parcel delivery, typical of advance-fee fraud schemes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/6df7e7a426e7e03953730bd7c73c6e8b/vavekanudarovosiborulan.pdf In PDF document text
    • https://vanphongphampmc.com/upload/files/jipevixatun.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/bff8e8b34d2fb434902a6b972d5e3484/zagewebosunufujesigu.pdfIn PDF document text
    • http://metabolit-plus.ru/files/file/gitomizovakudujajaw.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c55761a673---bimup.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099fdde408b1---58630130339.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe83c267ab---mipamikomabexupureko.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe2093cb0e---sanikereganewenikijaw.pdfIn PDF document text
    • http://fipjp.com/userfiles/file/40274010518.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a8fcb38291f---7188081490.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160bc3b90ec0b3---zipurefilanut.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/lecbji53tci7fetmckqm7llm68/89757273607.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609edd53dcdfb---9235535258.pdfIn PDF document text
    • https://ev-owners.jp/userfiles//files/jesemu.pdfIn PDF document text
    • https://hpsoft.shop/upload/files/fovizodave.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a6238403ae2---bujitaponinoxugase.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/01bbff59e3437ab07b57dee2ef61b442/zijenitaf.pdfIn PDF document text
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/7b46bvd0tmf8cb0q4ute1bchle/nutowutofedavu.pdfIn PDF document text
    • http://urjabatteries.in/userfiles/file/lafulosuzuwapivenu.pdfIn PDF document text
    • http://thepokeluau.com/uploads/files/56794368914.pdfIn PDF document text
    • https://immo-cjeanpaul.lu/userfiles/files/61740309357.pdfIn PDF document text
    • http://zonwering-belgie.eu/ckfinder/userfiles/files/robunosefijefabimax.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160aac93262002---lawexivizi.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1e71221d3---5114891993.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/soduxosajenef.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/d6b110c9e382909b455fa3c8b94d2973/89872103196.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=boilery+seafood+and+grillPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1D 10596 bytes
SHA-256: 24395d5810087c44c16ebaa556ae85f3cd10daedc623938849667b75a5ce804e
font_01_sfnt_off00010738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10738 18172 bytes
SHA-256: e89336a725d0a133db10aad65e1e1b6bcdee602fb4d36845d293901d4e90b33e
font_02_sfnt_off00013655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13655 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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