Malicious PDF — malware analysis report

Static analysis result for SHA-256 68cb8782aa14eb43…

MALICIOUS

PDF

69.9 KB Created: 2021-02-14 22:57:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 36c0ecc80045c055ac17a9f1188b89e0 SHA-1: f178e793d21e46680ebc0706ea9c8c5517337e87 SHA-256: 68cb8782aa14eb433f6a86b351a36ccd1bc0a46d7435349742f7541d604b68eb
196 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.
  • 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.
  • 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://jottigo.ru/wix?keyword=what+do+the+sheep+say+in+babe PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4485157/normal_5ffacc462d46f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480173/normal_6004edb149684.pdfIn PDF document text
    • http://genusttwsr.fun/zavewaneneserulig1x00m.pdfIn PDF document text
    • https://sonujeti.weebly.com/uploads/1/3/0/9/130969686/8878170.pdfIn PDF document text
    • https://gujavaluzosozu.weebly.com/uploads/1/3/4/0/134013303/nuriwexo.pdfIn PDF document text
    • http://eeuuurrrrr.space/21060178510tl60k.pdfIn PDF document text
    • https://cdn.sqhk.co/saboxiwago/v5ihhdL/day_r_premium_apk_no_mod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481662/normal_6018442f0da07.pdfIn PDF document text
    • https://figapizezedop.weebly.com/uploads/1/3/4/3/134364787/foxedusokonoj_vivuti_pamisajolig.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/dibedamoka/34587594473.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/23975194398.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/characteristics_of_informal_organization.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/bunetumere.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/dunokosegalebit.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/24627243986.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/addition_and_subtraction_without_regrouping.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_off0000d5ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FF 5172 bytes
SHA-256: 1f51dfd29041587cdd6bdaa761e28931481d2c6bc5776490e7d59deebe8dc421
font_01_sfnt_off0000e7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A8 10240 bytes
SHA-256: 21d37b867dd32c7d627aed86226e29d352ecee46ca36af5ca9a3491e7a6f0df0