Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc753b3d1bac8ffa…

MALICIOUS

PDF

77.3 KB Created: 2021-02-17 14:18:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 93cc775cd98b8bb754440518c6ece6bf SHA-1: fbcd58c6dd4de3102ac4ef49f5ce5d534d7cff66 SHA-256: cc753b3d1bac8ffa1d86738b6e0329be359f8d342dccfa48ea536a663875c983
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • 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://maypoin.ru/123?utm_term=2007+mercury+9.9+4+stroke+weight PDF link annotation
    • https://rapalavosifezo.weebly.com/uploads/1/3/4/8/134886177/nopovo.pdfIn PDF document text
    • http://albatros-trans.ru/71148914861jnmcd.pdfIn PDF document text
    • http://discout.online/pirates_of_silicon_valley_720p_download_in_hindis7ekq.pdfIn PDF document text
    • https://lalinixew.weebly.com/uploads/1/3/4/2/134265361/davudobupogib.pdfIn PDF document text
    • https://mesasijodise.weebly.com/uploads/1/3/5/3/135315214/87bcd2010b91574.pdfIn PDF document text
    • https://lepudumewo.weebly.com/uploads/1/3/5/9/135962044/7cd2ea41366.pdfIn PDF document text
    • https://lojodisomu.weebly.com/uploads/1/3/4/0/134042672/4012e5.pdfIn PDF document text
    • http://winoraama.space/8467469496055n3q.pdfIn PDF document text
    • https://revugegan.weebly.com/uploads/1/3/4/6/134682990/5a77df4507b1bb.pdfIn PDF document text
    • https://mugakosi.weebly.com/uploads/1/3/1/3/131379948/71188.pdfIn PDF document text
    • https://tujezagen.weebly.com/uploads/1/3/4/7/134775207/zumose.pdfIn PDF document text
    • http://magic-world.site/eyewitness_report_formatg0id8.pdfIn PDF document text
    • https://mosejibufo.weebly.com/uploads/1/3/4/4/134437632/0c71bd3.pdfIn PDF document text
    • https://buvapubadoloj.weebly.com/uploads/1/3/4/2/134265521/dumifologovegivanam.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/xafaxotaful/42930028062.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_off0000f00c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00C 5764 bytes
SHA-256: 65a86ca0663c749568fce86d1f96eb6ded5db40e04ab587afd6f8f484b98436f
font_01_sfnt_off000103b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B9 10748 bytes
SHA-256: f160acbb57fb4b035339e90852d6cf3158fd6683818632aab00f9ca0b440438e