Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e66e59f2c12851…

MALICIOUS

PDF

68.9 KB Created: 2021-09-30 18:07:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 07a4e15ce5e06a7abfae29c029b6c529 SHA-1: 235c57b92b5580c3ab9e1f2c0e6a79b4e68362f7 SHA-256: 07e66e59f2c1285130b98753b9de9b4f257ee23cf6314ceb8498f6c84d603ba2
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains numerous links to external domains, many of which appear to be compromised WordPress sites or disposable hosting, suggesting an attempt to redirect users to malicious content or downloads. The heuristic PDF_IMAGE_LURE indicates the document is likely an image-based lure designed to trick users into clicking a link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://laborke.ru/uplcv?utm_term=download+football+strike+mod+apk PDF link annotation
    • https://mitrasuksesku.com/userfiles/file/39695268655.pdfIn PDF document text
    • http://jiuhuapm.com/upfile/file/tiwepupekavupatijixovewuk.pdfIn PDF document text
    • http://harekatmemuru.com/images/Media/files/jevogil.pdfIn PDF document text
    • https://juvelyrikoscentras.lt/Files/file/sotubafiralerenelivebi.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/09a2de4fd271ab3ff9a88ecd7731e669/19348116726.pdfIn PDF document text
    • http://termocity.by/pics/files/93504070997.pdfIn PDF document text
    • http://sunway.me/uploads/file/091614518126.pdfIn PDF document text
    • https://badrivishal.com/media/vevunufepojejigime.pdfIn PDF document text
    • https://sanidom.pl/img/file/jejolizipeb.pdfIn PDF document text
    • http://hvezda-pardubice.cz/files/file/wanonefivu.pdfIn PDF document text
    • http://momsystem.ru/public/file/62774880066.pdfIn PDF document text
    • http://azinsaghf.com/cache/fck_files/file/dozoteveranobenopusuziv.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141a119c5740---41227756867.pdfIn PDF document text
    • http://easyliveconstruction.com/ci/userfiles/files/xawobuze.pdfIn PDF document text
    • https://plewmal-d.com/Uploads/files/vurujitimarivalanefu.pdfIn PDF document text
    • http://strandedtattoo.com/file/ramuwoxobakagoxutito.pdfIn PDF document text
    • http://kimwendelldesign.com/ckfinder/userfiles/files/54431112079.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/4ed45a2f11a36138449648a8aad59445/wibadasoja.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/034cf364f1dcb17a960a89b7349ba715/gagejujizew.pdfIn PDF document text
    • http://radio6deenero.com/uploaded/files/rumuvigese.pdfIn PDF document text
    • https://euinsuti.uniluxgym.ro/app/webroot/files/userfiles/files/6699182719.pdfIn PDF document text
    • http://patp1ryb.ru/media/file/ruwusofupipuviwefiwodak.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_off0000b0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC906 14364 bytes
SHA-256: 0d32825ab3c88400f18db4283cd15af94bf37f9a531d46e0691c26a3ec3a4641
font_02_sfnt_off0000ec85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC85 10976 bytes
SHA-256: 03291d5ee94cbc31892094f9d35ac3bc1bddc30633bc0af359ae2fa68c15e554

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