Malicious PDF — malware analysis report

Static analysis result for SHA-256 482897be31941668…

MALICIOUS

PDF

87.5 KB Created: 2021-07-16 17:46:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 4366acde0e345fd4046a341930195b99 SHA-1: 0d376f83418502f53a05810516908ff9646f71c7 SHA-256: 482897be31941668e337bc682020ad4c568351540d606936d328f55dcdd32d9c
156 Risk Score

Malware Insights

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

The PDF file contains a link farm with numerous URLs, many hosted on compromised CMS platforms or disposable domains, indicating a malicious intent to redirect users. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely serving as a lure for phishing or malware distribution. The presence of multiple external URIs and link farm heuristics points towards an attempt to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://www.gonouvellezelande.com/files/narifadafolebo.pdf In PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/533f6109ab7fb2d9c28919f7585edace/widisof.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079bf48f2f0c---wuxutapotumadofomugo.pdfIn PDF document text
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac0398387db---mubexelejugojenokafu.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2ade111f2c---60658518482.pdfIn PDF document text
    • http://purofirstli.com/userfiles/files/kixopikesoxesido.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/22c0d73cf362b9adc349d019af9f8ca6/jiropavud.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d1ddeba5fa---97599370717.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/160802e027df3a---bitujizaxupop.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/65b547761bd006e510f877212afe8617/91240706007.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/tobulamiratazulu.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c7332fa365d---mefumuv.pdfIn PDF document text
    • https://prtl.pl/userfiles/file/18409875889.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/muo15dnkfvdoht1bdmi9a80qsm/510524895.pdfIn PDF document text
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/6b08728018237393f8bb24a2267ab59f/tumazelisabutuwi.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097148b3c09c---33472400083.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7eefb75621---3251642093.pdfIn PDF document text
    • http://kryotherapie.net/neu/userfiles/file/66904845023.pdfIn PDF document text
    • http://ecohouse-lab.com/userfiles/file/kejafabivubaf.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6eb33531ea---limigoxijap.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/fco0mejad35ebv65aq3rvupiq4/4495325021.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/cde7b31716fc0c9e0c993f7af1db5b5c/34636389787.pdfIn PDF document text
    • http://assistance.uz/images/shared/file/60854470467.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/86ce9cb5fe0b004d4fc195862d987cdb/sokizeg.pdfIn PDF document text
    • http://vce34.ru/attachments/file/88510691560.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=how+to+get+unbanned+on+minecraftPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF94 18808 bytes
SHA-256: 80c9c09324a1ae0ad26e52f4aea4398631faf1a9332f63b349fa3d223abd67c3
font_01_sfnt_off00011f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F63 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001377a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1377A 10924 bytes
SHA-256: 2dd0d16e83e3496d9259a4a6318f9768eb0ea5fd182c26860afd1360ececaa98

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