Malicious PDF — malware analysis report

Static analysis result for SHA-256 492ba78715ae252e…

MALICIOUS

PDF

72.7 KB Created: 2021-02-19 00:18:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3cb252150e234523aafbd28b6ab9264b SHA-1: d61f35502b17cb451f42788b9cd43658e8c1c754 SHA-256: 492ba78715ae252e6aecff8c485b7ef81a64110081d104f2c2be9c3ecb4fd034
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://bologen.ru/123?utm_term=winter+is+coming+game+of+thrones+book PDF link annotation
    • https://zotekuruwufuk.weebly.com/uploads/1/3/4/1/134108654/2492763.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408463/normal_5ff5633285fc5.pdfIn PDF document text
    • https://poxesaxe.weebly.com/uploads/1/3/0/7/130738711/nilutero.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465255/normal_5fe78bbfc6f67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385850/normal_601f615d961d3.pdfIn PDF document text
    • http://jurelireroxux.22web.org/ripidiwe.pdfIn PDF document text
    • https://cdn.sqhk.co/mewivupa/ZpLhghf/4551823073.pdfIn PDF document text
    • http://outputqwvk.space/77259047634ci7pg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459914/normal_5feeb0d558491.pdfIn PDF document text
    • https://cdn.sqhk.co/tokarikadez/jc5SBtu/revamenuwuxovirerezivamo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426557/normal_5fcf6b960883c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419832/normal_5ffdeab50affa.pdfIn PDF document text
    • https://sojurepew.weebly.com/uploads/1/3/5/9/135992925/5693663.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462974/normal_601b8fe5829b2.pdfIn PDF document text
    • https://zepudelewow.weebly.com/uploads/1/3/2/6/132682561/7301011.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417652/normal_5fdaf9391b3e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470553/normal_6022916eba9dd.pdfIn PDF document text
    • https://cdn.sqhk.co/linaxezo/ibhbnPL/95796729897.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_off0000de0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0B 5480 bytes
SHA-256: fefab8d07b669b18678ae291df39d0bb037cc7d11fd6ed1c7832becf14e21129
font_01_sfnt_off0000f099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF099 10828 bytes
SHA-256: 8ee54ca150e8285985a2c6872c455950115830496a136ed5b846ce13874618b9

Open this report in the interactive analyzer, or submit your own file for analysis.