Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e2f00b5f4faa5f…

MALICIOUS

PDF

93.3 KB Created: 2021-09-06 10:24:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 20345dedbf49aafcfb10617685a04cb9 SHA-1: aa0dc89377bdbd3bb32675938a5f7c107ce69f72 SHA-256: 01e2f00b5f4faa5f303ad9fbbc3e6e075691f57c489c9057c09b2c9fcc67d911
156 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or malware distribution lure. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, forming a link farm designed to redirect users. The primary attack pattern involves tricking users into clicking these links, which likely lead to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://medvor.ru/uplcv?utm_term=pendragon+rpg+1st+edition+pdf PDF link annotation
    • http://macautemple.com/userfiles/file/losuladasafufunodep.pdfIn PDF document text
    • http://uktohabbarijamalta.com/files/file/wamuzubexiliremag.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086d7d7d7c65---12796758327.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/16099205684f8b---wategotos.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/hqjfo719lgupkmlncmqqs0viud/83525122699.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/b927720a25c55f1757342bd5698d8a3e/39095938086.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/161335fd8e76b3---webumozusovorute.pdfIn PDF document text
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/ea80d0f9a68e93a037df3b52a84f14ff/ziduxogaxivonoma.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077aeb4abdc8---54861038379.pdfIn PDF document text
    • https://retake.dk/ckfinder/userfiles/files/11080425340.pdfIn PDF document text
    • http://tuzvedo.hu/elemek/file/38072521857.pdfIn PDF document text
    • https://cornerstonelaw.eu/userfiles//file/2539818839.pdfIn PDF document text
    • http://kalkulacka-hypo.cz/userfiles/files/noxuged.pdfIn PDF document text
    • http://falconartistmanagement.com/ckfinder/userfiles/files/67680481146.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609d063ae507b---91512115238.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609499fad225d---31440840586.pdfIn PDF document text
    • http://gro-felix.si/uploads/74830284043.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/dovpai1if6s51sjt4ctlvc79u4/nedudedu.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/0p4he7kbu5276ssm4hkp1vj4k6/vuvaxarufagi.pdfIn PDF document text
    • http://conelser.hu/fck_uploads/file/dopipenofijilawujiziteza.pdfIn PDF document text
    • http://alumcity.ru/userfiles/file/24923521023.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d48de337a4f---kikanulox.pdfIn PDF document text
    • http://aelma.com/sites/default/userfiles/file/73923748303.pdfIn PDF document text
    • 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_off00010971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10971 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12183 18108 bytes
SHA-256: 27fab1dfa773df2a3624dbeb2f9813548ecebb79106b92c3ad03ad9df3420303
font_02_sfnt_off00015074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15074 10680 bytes
SHA-256: 81caa5c0a164a9b2b7b9f0ab5f5e5d936df8128678098d7e80fa81c3ac5ec927

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