Malicious PDF — malware analysis report

Static analysis result for SHA-256 414a725453c3a9b0…

MALICIOUS

PDF

91.6 KB Created: 2021-06-26 01:14:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 52f89734568e859ca0d7225b378a544c SHA-1: fabd3125c2aefdc78f445b4eee86d0b3765ede16 SHA-256: 414a725453c3a9b04dcd12ab84a510306fccdf4e8d31e0523c74f15a3d116e3f
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of an advance-fee scam, as indicated by the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a distribution network for malicious content. The presence of ClamAV detection and ML classification further supports its malicious nature. No scripts were extracted, but the document's structure and linked URLs point towards a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://huntic.ru/uplcv?utm_term=can+i+overfeed+my+baby+formula
    • https://alihuata.com/userfiles/file/85134669381.pdf
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160792cee21595---95104188988.pdf
    • http://ahkjt.com/upfile/file/julexojewegonokawul.pdf
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076b2dcb6c4b---87807894447.pdf
    • http://sun-eko.eu/files/file/kogan.pdf
    • http://herculesestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/33082223533.pdf
    • http://adamlegal.com/userfiles/file/32367706759.pdf
    • https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c8ad391b95---82045026094.pdf
    • http://animalscipublisher.com/files/upfiles/file/wixagevab.pdf
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160b012f9923db---22701479098.pdf
    • http://holycrossyouthministryasp.org/clients/f/fa/fa15eac34f6f8ef5a8ada011ffef1578/File/78258344754.pdf
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7a8ee2eb5---mapemevuzudelojuwulejas.pdf
    • https://ntct-dz.com/ckfinder/userfiles/files/57547029876.pdf
    • http://weymouthhighschoolclassof62.com/clients/5/50/50fe23896e84432c97ff20d680692bb9/File/rarawiledepejode.pdf
    • http://backupcenters.com/userfiles/file/24007892757.pdf
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/c7a7a6a1104fc9caf8ae6770855c4666/ronemalubulefokos.pdf
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd6b194640---tujid.pdf
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce31e088e7f---kegidaremowekovoterum.pdf
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/de2756cbaf7906df887d96a023f58edf/46150165283.pdf
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607df724b0951---91424274938.pdf
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160ad71db3d8d1---naberabe.pdf
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2d28118201e5c6f38e6785c5aee76fb5/88242402110.pdf
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7c8735aad1---jubegoxukizolafebaxuzixe.pdf
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/6f921fe6e80bda18d9338a030bc9864e/87420007680.pdf
    • 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_off00010261.bin
fc6e04252edcf614ad95af226eacd23c41e164ddc9c87d4fdf6e4e1794305387
pdf-font-stream PDF embedded font (sfnt) at offset 0x10261 17144 bytes
font_01_sfnt_off00012f30.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12F30 16792 bytes
font_02_sfnt_off00014747.bin
3cd42976a34a288ff33ac69f2e977f6195365d6187c1478f1a0cf9b8a7f653b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x14747 10700 bytes