Malicious PDF — malware analysis report

Static analysis result for SHA-256 48feb4397b8f411c…

MALICIOUS

PDF

70.2 KB Created: 2021-06-05 01:42:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61b531e31e6a01f82ec5ed5e02d71b39 SHA-1: 24dbda81d7e8c2dbca6500cf063fac3b8b3f747f SHA-256: 48feb4397b8f411c96293531037d94488a26fc3e64df403d9582ae5a8316f359
156 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which appear to be compromised WordPress installations. The primary lure seems to be related to a search query for "what is indian vegetarian keto diet", directing users to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 https://catamma.ru/uplcv?utm_term=what+is+indian+vegetarian+keto+diet
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/b0d40d45f2d10ebdce42febb419393d7/gafopuxibobirawazi.pdf
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609632bbe5b69---favekododulujisevuj.pdf
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/591a27bc458d371731801f18e85fba15/dusutafov.pdf
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/ebcca6d8462c895b8a96b07d5d241675/15924407742.pdf
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f7084909f9---77696410409.pdf
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/0edc23cb28fbbde5a85af6f1a15c6a34/51111295234.pdf
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3e745e612---libopori.pdf
    • http://amphorabeautyclub.com/campannas/file/pisisimebetosuv.pdf
    • http://kagoshimakojintaxi.com/userfiles/file/fadoriveminurewawuliv.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608566c95b3b1---88442326837.pdf
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/0b513e56adee2045f0b2a8d1708b6263/42020149745.pdf
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/ekkat78khv1r3jldr8q8s8b1d7/73066741299.pdf
    • https://abofahed.com/userfiles/file/74704312018.pdf
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/7b81ovqeeo46igu290jtcdvikj/49446880552.pdf
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b744fac230b---6208802581.pdf
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/e353013adb9ea230854cf643bd985607/43579289363.pdf
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d58084919d---tomomabolatirama.pdf
    • http://asiadomainstore.com/userfiles/file/92446807175.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_off0000d48d.bin
5e29968ce6f9c5f8d8ca30f3862a3c4c37b78cd91dcac896588a4982585e6631		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD48D 5192 bytes
font_01_sfnt_off0000e646.bin
6f1a8b306af7600be1ef732f574b224e090dbc650f91abda016d2747ae43ff20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE646 10428 bytes

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