Malicious PDF — malware analysis report

Static analysis result for SHA-256 c190713ae9577318…

MALICIOUS

PDF

62.7 KB Created: 2020-11-20 04:09:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-09
MD5: dcf45ff9e41cdc042ef0fc225e159673 SHA-1: 24ed989f001a47603c6865e5cc8bd04003e70809 SHA-256: c190713ae9577318f080cfe55b855c5dbf1eb2f0a19a2c18f032e0c0b14c42dc
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://cctraff.ru/aws?utm_term=kabali+full+movie+hd+tamil In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384817/normal_5f92fa22d04a0.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/vunidixeviro_xitosujitupile_kadape.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369302/normal_5f87b6f009719.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446650/normal_5f9f459bbbaf0.pdfIn PDF document text
    • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/debepesotudamu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384030/normal_5f9236883a4ae.pdfIn PDF document text
    • https://vuxojamobepu.weebly.com/uploads/1/3/4/3/134333522/pejujebesetix_kujod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369504/normal_5f9b99d66fa7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379856/normal_5f986f11d1bdf.pdfIn PDF document text
    • https://dajapofijakaf.weebly.com/uploads/1/3/4/2/134266914/1577928.pdfIn PDF document text
    • https://vovinusowoxojik.weebly.com/uploads/1/3/4/3/134349833/e13c57b70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366969/normal_5fad5fbdea4ed.pdfIn PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/zalivur.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/wixanarer/leonard_cohen_if_you_want_it_darker_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/58206600066.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_off0000b7c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7C4 5044 bytes
SHA-256: 90eb598569d5715e0c6fe25b779f1d31b9bd39076cb768cdda5ae897c9cf823a
font_01_sfnt_off0000c8d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8D8 10992 bytes
SHA-256: 8d502fef6a2bec44a6e9267b8c575c4f255b0b6d4f6063122d69a47c27456c57

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