Malicious PDF — malware analysis report

Static analysis result for SHA-256 a59a96a5ec6520e3…

MALICIOUS

PDF

74.7 KB Created: 2021-06-18 13:24:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01aa28abb3c1ae8393a25d65bd347d51 SHA-1: 6bbbddb1d6e33df610a1b39cc35029c25d60e16f SHA-256: a59a96a5ec6520e3d9bd0f652cb1d81699e1aa5f7be4fc9078393f31743e78bf
156 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to trick users into downloading files related to 'Pokemon go apk vmos'. Several heuristics indicate this is a malicious PDF, including a high ML classifier score and ClamAV detection as a phishing trojan. The embedded URLs point to various compromised websites and disposable hosting, suggesting an attempt to distribute malware or facilitate phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 http://tortsurprise.ru/upload/redactor/files/88302386383.pdf
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c48adf6c6ce---vuzarunuvaj.pdf
    • http://homenet-spb.ru/userfiles/file/74217411633.pdf
    • http://bobhendrix-law.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wogojiwakonimetexugobax.pdf
    • http://nature-revive.org/files/file/dapaj.pdf
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/40j89nv0n4cqoj9nv2hq7s87g0/xinedibo.pdf
    • https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/e4d162890896e36a60cca04fbef4ade8/jepojuwijinexokavufar.pdf
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/o2ivbs31erqobu0o11pmnau7oa/nimuwunajoki.pdf
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/d1ccb57f57fd4de86ed873999358f94c/ragozuwerosisotowe.pdf
    • https://okazdedziecko.pl/_files/Media/file/47087967415.pdf
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c66bb94b2e---ritirebedevexularuxuta.pdf
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/0bb3c4a0f3d5e245abe6117c88019f4e/zobunuronexek.pdf
    • http://leaguengn.com/userfiles/file/%5C/napuzimide.pdf
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdce06d68d---nemiwegebarisunenefuti.pdf
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160aa321b32891---vofofapagozaxafowu.pdf
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160775e12dcba5---84718009200.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=pokemon+go+apk+vmos
    • 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_off0000e41a.bin
d0856217bad2667c66a60f18ae7ae759b2375fb83e014b99feefaed1f808e20e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE41A 5136 bytes
font_01_sfnt_off0000f593.bin
25dbcdf4074d5e3342534a0d4c673e3e19913497447aa9e9ce3ef2d5aa4e018e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF593 11948 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.