Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01ae05da9f6e3ba…

MALICIOUS

PDF

75.7 KB Created: 2021-02-26 11:41:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 7e0abd91fa59f187125653d31968b09d SHA-1: a133e7e1d6b89774524cd101c1428e85152171fb SHA-256: b01ae05da9f6e3ba7e5294b8d9a3dddf64ac73aa4c33108a08966e4d2a085be5
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lead the user to a harmful site. The ML classifier and ClamAV detection strongly support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit users, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://dafemum.ru/award?keyword=who+really+invented+the+telephone+first In PDF document text
    • https://cdn.sqhk.co/ledodatefu/z5Ak3jg/bubble_maniac_tea_house_houston_tx.pdfIn PDF document text
    • https://cdn.sqhk.co/timadupak/jfJijqK/minecraft_world_record_seedless.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409797/normal_60371497184c9.pdfIn PDF document text
    • https://cdn.sqhk.co/jarebomu/hcUAghi/sagutosa.pdfIn PDF document text
    • http://voiprormul.xyz/jijufilusispq.pdfIn PDF document text
    • http://help-mediasupport.com/safukegonipiwimadaxonewgy4c1.pdfIn PDF document text
    • http://webdefilmizle.com/fearless_friday_1a_basketball7znni.pdfIn PDF document text
    • http://nugekurobeju.iblogger.org/bawskee_1_zip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375705/normal_602384c065355.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sefixigidimi.rf.gd/21201617550.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/mtv_lebanon_news_reporters_names.pdfIn PDF document text
    • http://wikatamuk.rf.gd/35940990306.pdfIn PDF document text
    • http://jadigilotuziwir.rf.gd/94185168040.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/tencent_gaming_buddy_for_mac_free.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/fakidibak.pdfIn PDF document text
    • http://vuvobulasuxes.epizy.com/borland_c_compiler_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/crossword_clue_answer_dark_brown.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_off0000eae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE0 5304 bytes
SHA-256: c56c7fd1f7b3d0dba3b74263a3982a8f3f2b0d9949bf57e60369392ad6416637
font_01_sfnt_off0000fcfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFC 10644 bytes
SHA-256: c31fe08620935d1cc0394ec7225f48fbcf7a9c3df8360ed0ebe028feb6c668f9

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