Malicious PDF — malware analysis report

Static analysis result for SHA-256 0180f1314c9161b4…

MALICIOUS

PDF

71.9 KB Created: 2021-01-24 08:15:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 4c1094a9b32bd5b5ba9a83eae3bc9412 SHA-1: c420a501f18a510f46c8425378220d22825fa5a3 SHA-256: 0180f1314c9161b4f4e558694030d1940221b21b8ed01a982d7b6f789925bf48
254 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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://yafferge.ru/123?utm_term=warframe+vicious+spread+any+good In PDF document text
    • https://jamafijuzu.weebly.com/uploads/1/3/1/4/131437216/lijimofetej-sosesobanifuzow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415739/normal_5fce4f861160c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467036/normal_5fe6a6741964e.pdfIn PDF document text
    • https://site-1254252.mozfiles.com/files/1254252/50898891727.pdfIn PDF document text
    • https://rulorakaduf.weebly.com/uploads/1/3/4/4/134480735/mipexofafus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365586/normal_5ff897e7d32d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_5fd1703f76bd1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386354/normal_5ff16f87238bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413570/normal_5fd1847faa4c7.pdfIn PDF document text
    • https://mebotorafegamor.weebly.com/uploads/1/3/0/7/130739377/livaxokeke.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377100/normal_5fee4073819e3.pdfIn PDF document text
    • https://lukogazusewof.weebly.com/uploads/1/3/4/6/134643336/455033.pdfIn PDF document text
    • https://jodisugej.weebly.com/uploads/1/3/4/7/134732418/9661491.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381541/normal_6009d9570eb10.pdfIn PDF document text
    • https://noturumon.weebly.com/uploads/1/3/0/8/130814868/kenajata.pdfIn PDF document text
    • https://site-1174676.mozfiles.com/files/1174676/pimisumurujuvuluwopame.pdfIn PDF document text
    • https://zatuzura.weebly.com/uploads/1/3/1/4/131453499/9854089.pdfIn PDF document text
    • https://wovupidej.weebly.com/uploads/1/3/4/6/134687137/jaboludatu.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_off0000dba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA7 5616 bytes
SHA-256: d3fbc692abbd8ff2096b077273875aeadaf06ee4021c923297913bd6683beec7
font_01_sfnt_off0000eec8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC8 10544 bytes
SHA-256: cbff85091a2b724550b58417a4e00584603c271d0d7cda29463a6e331b9bb869