Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc10a4c0618e469…

MALICIOUS

PDF

71.5 KB Created: 2021-02-17 10:45:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8abd60d75fffb60fb6328ea8d4cd1b45 SHA-1: 043a56d64ff4732f9881987829816e408ec21b39 SHA-256: 9fc10a4c0618e469a6ef1a9eaac480ab4970a079bd65bbcdd8d04e15eaed5a2c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wb?keyword=rcbs%20chargemaster%201500%20vs%20lite PDF link annotation
    • https://cdn.sqhk.co/kajipazuto/eWGgjih/five_below_stores_in_dayton_ohio.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490141/normal_5fd350308fcdd.pdfIn PDF document text
    • http://health-top.ru/34824988262jsmup.pdfIn PDF document text
    • https://cdn.sqhk.co/kupuvikadob/muuggh7/50624056725.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372980/normal_5fcf3ee7cc535.pdfIn PDF document text
    • https://cdn.sqhk.co/nesadatifu/eicgChc/gitopijurokejijikewulur.pdfIn PDF document text
    • https://cdn.sqhk.co/bexoninodag/GjiigcC/61878460551.pdfIn PDF document text
    • https://cdn.sqhk.co/letopoto/ghgcEQh/tumogeximozonugilutuvo.pdfIn PDF document text
    • http://ostanni.fun/magonekuxegosixer7nt.pdfIn PDF document text
    • https://rodinesupogoj.weebly.com/uploads/1/3/1/3/131384539/xugeropejaxizetor.pdfIn PDF document text
    • https://pejetoli.weebly.com/uploads/1/3/1/4/131454808/89f019b63a.pdfIn PDF document text
    • http://derewopenila.22web.org/facebook_banner_design_template.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485172/normal_5fe2f0eeb9e0b.pdfIn PDF document text
    • http://cloudplay.xyz/samsung_top_loading_washing_machine_repair_manualzxxdw.pdfIn PDF document text
    • https://cdn.sqhk.co/pivugisaxap/fibhjjh/kiguzedokitunajejo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD930 5736 bytes
SHA-256: 1dc3648c4d9e71b9a8b23cd7c3f10fd7a9172533e2c77ae7ba61542af1978e25
font_01_sfnt_off0000ec9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9E 10816 bytes
SHA-256: ba821b353fc8666b3686b97601b71497b3fe30ff3f11ee935d7e1c93d98988ab