Malicious PDF — malware analysis report

Static analysis result for SHA-256 f25ce7abe2b5fb59…

MALICIOUS

PDF

84.9 KB Created: 2021-07-04 03:50:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3f7e4c3dcc7327d500c8b76d0184e159 SHA-1: 2e92509af2e6279e7c14cbf35697ec2c4a36a0dd SHA-256: f25ce7abe2b5fb59c9b44c4b6ec2b2f22c271e8520065c7c64dd3f779d5660e8
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of an advance-fee scam. It contains numerous links to external PDFs hosted on various websites, many of which appear to be compromised or disposable. The document's structure and embedded links suggest it is designed to lead users to fraudulent content, likely to trick them into paying fees for non-existent prizes or services.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://rumputhijau.com/contents//files/vevagelelojaf.pdf
    • http://chistogood.ru/admin/ckfinder/userfiles/files/pogowufovozizamej.pdf
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8746ad5a36---fusidinikefetob.pdf
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/aff9da6eed7450752925402ffb1627c9/rotijitazo.pdf
    • http://harasim.cz/uploaded/files/natotubuwu.pdf
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/kik2ktphec9m0upt16vp8p75rg/40234760503.pdf
    • http://j1medical.com/uploaded/file/82072671175.pdf
    • http://rollfactorytogo.com/uploads/files/mozujelikixugakigi.pdf
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093549f24734---1677495372.pdf
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/7d2316ffaeeef98c190d7eba70b1465d/bogefigolosukijowezimawi.pdf
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160945ecb650ae---18967604276.pdf
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1bdb2819c9---boteborufat.pdf
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/f0gjvsp1b1tdu18fhb4r3i0i40/gidup.pdf
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba11ddc53e9---60815872664.pdf
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/htb2sue02fcgvr9d9sordjq1n7/15546347351.pdf
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608a44b9c4edc---86485135468.pdf
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608a2c63b57f3---74883748785.pdf
    • http://vintageguitar.ru/ckfinder/userfiles/files/10196215591.pdf
    • https://eastmanllc.com/ckfinder/userfiles/files/galefifedabixiwoki.pdf
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160dbabca12e46---tuluzexudakepagepodip.pdf
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c4e0570e849---96329488558.pdf
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/61f50fc6050d6784dbeba35c8d91cd0b/jarigifatuziluripedan.pdf
    • https://hanedantoptan.com/upload/files/6782526136.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=multiple+class+in+one+java+file
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e730.bin
106aef66b8732f67d8139d6404b1ad7e79c1a30b11249dca06844fa84d45be39		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE730 17672 bytes
font_01_sfnt_off000115c0.bin
6c264b4de68612bd3a044339367ff5149cdddad425a14d8c2239c5ffe5b4c84b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115C0 10660 bytes
font_02_sfnt_off00012e52.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E52 16792 bytes

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