Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d57f4570146420e…

MALICIOUS

PDF

70.0 KB Created: 2021-02-16 18:13:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 93b3c6d5e464a4f8838c04e943dd4c57 SHA-1: 2f870fb126e2f782aa2ba544fad01c908487cb9d SHA-256: 2d57f4570146420ed7d35381b2442c117dca2d848af15e119af93e1b86a2a70d
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to PDFs with numeric or generic slugs, indicative of a link farm or SEO abuse. One of the primary links leads to a domain associated with phishing. ClamAV also detected this file as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/wix?keyword=what+is+available+upon+request+mean PDF link annotation
    • https://cdn.sqhk.co/gobumavurob/QFhduje/werewolf_costume_diy_makeup.pdfIn PDF document text
    • http://axecheat5.xyz/gojidowamenepoxupuribancfq0u.pdfIn PDF document text
    • https://tedejewudokas.weebly.com/uploads/1/3/1/0/131070167/66575a4f3036d2.pdfIn PDF document text
    • https://rupogasonewu.weebly.com/uploads/1/3/4/6/134653860/tijurofob_jenagomorator_xesedik.pdfIn PDF document text
    • http://yeswins.space/78398284758tqvq7.pdfIn PDF document text
    • http://lesantyqas.online/dead_space_apk_obb_offline4ouy0.pdfIn PDF document text
    • http://losinglotterynumbers.com/tulopanitafonumaly5tnd.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/ghihYic/university_of_miami_football_stadium_address.pdfIn PDF document text
    • http://procripton.com/cold_blooded_love_musicrcdhu.pdfIn PDF document text
    • http://morpeoplelife.ru/robot_avengers_mod_apkhjx3h.pdfIn PDF document text
    • http://trokot-online.xyz/view_archived_messages_on_messenger_androidejfv1.pdfIn PDF document text
    • https://cdn.sqhk.co/mekizojo/Vdw5xDW/87746308573.pdfIn PDF document text
    • http://sparzha.club/76509539713ve19s.pdfIn PDF document text
    • http://idealica-uficialeitalia.website/83111462060l04de.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/voxulija/95756789636.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/fejuwunefosafozikisil.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/71221603227.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/spirit_controlled_temperament_book.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/50218029631.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD593 5400 bytes
SHA-256: cef3613c3ac2a368b063d6595784643e93ba82fde29a5d7efa852c2ed4aa0f29
font_01_sfnt_off0000e7d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D0 10304 bytes
SHA-256: c822f41d934db3214665784945bb165f5faab6acfb99dcf68e11b493c0b8d25b

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