Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aab3bb395c872a4…

MALICIOUS

PDF

72.2 KB Created: 2021-03-01 18:45:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4216b6e56b23a0cfb1c753d721772c63 SHA-1: b161429fc7248589f1a4441afe2eff0456aea554 SHA-256: 8aab3bb395c872a4dccc3519af3174ed6a448136534eb227394a8d0a8246c418
184 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
  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://midufefew.ru/award?keyword=2007+chevy+impala+lt+exhaust+system+replacement.
  • 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://midufefew.ru/award?keyword=2007+chevy+impala+lt+exhaust+system+replacement PDF link annotation
    • https://cdn.sqhk.co/bafiweba/j97hegg/soneritebinufixodi.pdfIn PDF document text
    • http://ig-soft-team.com/sauder_craft_armoire_assembly_instructions5gssj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421042/normal_5fff76eae8bd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465274/normal_5ff7c78f1b0ca.pdfIn PDF document text
    • http://xigosilefonaboj.iblogger.org/green_consumerism_an_a-_to-_z_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503874/normal_6011f2ff5c2d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413243/normal_5fffbe43a3637.pdfIn PDF document text
    • http://return-0.com/xozow9fjw3.pdfIn PDF document text
    • http://vipadminler.org/nodinetuwovakixuke5n.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/cMgEJqL/80458267743.pdfIn PDF document text
    • http://litvinenko.xyz/is_the_art_of_racing_in_the_rain_nonfiction342j1.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/somisilegex/beetlejuice_banana_boat_song.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/willis_reinsurance_market_report.pdfIn PDF document text
    • http://lobivovakebala.epizy.com/motemivenup.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/jizuwatexeze.pdfIn PDF document text
    • http://vabitiwobunena.rf.gd/bapizosal.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/gexizonezuge.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_off0000d823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD823 5660 bytes
SHA-256: 21f657496cb285cf93635622b84f3140078bc7399339d85043bc018f902d3e98
font_01_sfnt_off0000eb4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4C 12120 bytes
SHA-256: a352375d657266772772d4a85c78449f5692348d5c8a440bfe4c6bcaa3b534e9

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