Malicious PDF — malware analysis report

Static analysis result for SHA-256 e62518dac992d54d…

MALICIOUS

PDF

140.2 KB Created: 2021-06-09 03:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f053bb98f6eee7816bc3c1cc4c5b69a1 SHA-1: 2f9d3b8cf5066e78da923da150a198d966a2f2b3 SHA-256: e62518dac992d54d292340f9789ed46fd1c029fe356e766cb3526d9747289d1f
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF is classified as malicious by ML models and ClamAV, and exhibits characteristics of an advance-fee scam. It contains numerous links to external PDFs hosted on compromised WordPress sites, suggesting a phishing or malware distribution campaign. The document body, though heavily obfuscated, implies a lure related to 'class 12 english reading passages' and potentially a parcel delivery, aligning with advance-fee fraud tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://wastran.ru/uplcv?utm_term=class+12+english+reading+passages
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/aifjr999pdi14a6ra3i22vt02o/dugefovina.pdf
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a62c7583382---79490236311.pdf
    • https://ltanimalpark.com/wp-content/plugins/super-forms/uploads/php/files/e92698d0b63bdea69fbeaa35a311dc4b/dutoxav.pdf
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bdad1caab51---xukibokibas.pdf
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160773287ca8bf---21401921277.pdf
    • http://bet-balance.com/userfiles/file/74707472355.pdf
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd3914a5337---wutuxadibikuv.pdf
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc4aa1481dd---guwixebapigutipefuxovuju.pdf
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/66dae2db57bbe40e24e98a61f49cbbe4/10927767878.pdf
    • http://3bbb.fr/ckeditor/upload/files/76013695472.pdf
    • https://nslogisticservice.com/userfiles/files/besofedokozoj.pdf
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/4d3bcf6cae3c4ea52b7a47d7c3cfcb42/55363393290.pdf
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16089ca4255310---falumugut.pdf
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/3b123fc74457eae47ef889e1cb1ea92e/rarigil.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ec04.bin
271ab915538e4fc28c6f43a0739aac6636a3e5aaa22e5e7e6ed1902e20493f6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1EC04 5308 bytes
font_01_sfnt_off0001fe09.bin
504ce45db7dfe609be5bebacb1ed6b1fbe81cd672b933953d6c0b0003d2c5f7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1FE09 11092 bytes

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