Malicious PDF — malware analysis report

Static analysis result for SHA-256 04d53988ca668caa…

MALICIOUS

PDF

42.4 KB Created: 2020-10-10 13:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 93d803e4a4d79829bb159c714b3c1cd3 SHA-1: 763ffb2d33aae3f5f1e272b2fca36c41a57c223d SHA-256: 04d53988ca668caa162fd7a084dba1474b37016f4664cafd501870ee578bb602
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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.
  • 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://ttraff.link/pify?keyword=captains+of+crush+guide In PDF document text
    • http://files.polonskyfilm.com/uploads/1/3/1/6/131606146/mirakudumu.pdfIn PDF document text
    • http://files.premierebasketball.com/uploads/1/3/0/7/130776460/2187142.pdfIn PDF document text
    • http://nuduga.conwaysound.com/uploads/1/3/0/7/130776492/rezugifezorimezuxuji.pdfIn PDF document text
    • http://xarodema.allisonwickey.com/uploads/1/3/0/7/130776083/7424195.pdfIn PDF document text
    • http://fudixav.victoryindependentplanning.com/uploads/1/3/2/6/132696117/4310007.pdfIn PDF document text
    • http://files.cynthiahoyle.com/uploads/1/3/1/3/131398194/sobamof.pdfIn PDF document text
    • http://files.naturalrelief.ca/uploads/1/3/2/6/132681396/sitifoxubima_jabupomov.pdfIn PDF document text
    • http://files.nianayoga.com/uploads/1/3/0/8/130874393/vebituvava-wimakarali-zuxijanorog-bulavupaleku.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/73f7c300-4a4c-45a1-b16c-196b7a093291/34046165613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/punafopuzivipib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7736/4637/files/school_of_fear_book_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7537/9101/files/wawoxoje.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_off000067da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DA 5292 bytes
SHA-256: 6c695c1d096cc8a46c1294002fc1ec6c7904b5036243de7f34bb3d32f0f6f1b9
font_01_sfnt_off000079cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79CC 10328 bytes
SHA-256: b2188ad25809fbce543db8599be595f2536eb01c1220e3e6ad67e1c691b1f4e1