Malicious PDF — malware analysis report

Static analysis result for SHA-256 76aca343bb9dcb08…

MALICIOUS

PDF

73.2 KB Created: 2021-01-02 20:45:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 242a0743d4d031b8e9741339c9441f9c SHA-1: dd4e7ee5eba5470facce706d1145a858b6e9443c SHA-256: 76aca343bb9dcb08dceddb68058c1fbacd3c2aa9b126d917209331aac6a05b91
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an external URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to puppy sales, which is a common tactic for phishing and malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://trafffe.ru/123?utm_term=all+white+german+shepherd+puppies+for+sale PDF link annotation
    • https://besavijoxamidu.weebly.com/uploads/1/3/4/0/134096513/fomaloreb_jaboxatok_texovu_mibidufe.pdfIn PDF document text
    • https://cdn.sqhk.co/karapazepot/jdE8icJ/woodworking_plans_bookshelf.pdfIn PDF document text
    • https://cdn.sqhk.co/jibetovo/IOgijfD/barbie_princess_adventure_games.pdfIn PDF document text
    • https://vevejeda.weebly.com/uploads/1/3/0/7/130776099/1156356.pdfIn PDF document text
    • https://cdn.sqhk.co/kufedefivuvu/fjee0sb/phora_to_the_moon_mp3_download_naija.pdfIn PDF document text
    • https://penusifobituje.weebly.com/uploads/1/3/4/3/134314418/sukotigubonovomuzi.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/wibevewikonisot-sazudixixulufi-siriv-mudosujudewuvup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c99eabef-d844-4ead-8cd5-7872d4375f47/fold_paper_42_times.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/jomunujupezuforibabota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a28e278-6285-485b-a242-58756b627866/kubifukusaditokopejoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82ed66aa-119f-4241-80db-2642baf2b2f8/90395620474.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_off0000e1b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B8 5536 bytes
SHA-256: d89571d677c726df3b4665e7088643c39949cb178b3abece92c82a9a7912be79
font_01_sfnt_off0000f473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF473 10380 bytes
SHA-256: f2dbbbf24f05ff95b6d33bac11aeae18b49f5a6a681c6d55507160c1c01513e4