Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2c7a2adbfedf35a…

MALICIOUS

PDF

73.0 KB Created: 2021-02-17 03:40:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b7f954abab6a578360c4437e694dbc10 SHA-1: 5b80447288d43491b66a47ae41a718c16085ac17 SHA-256: c2c7a2adbfedf35a2ee3293293a4a59f5b9b37086b09b6001515feabb29c43e6
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=boston+whaler+rage+15+jet+boat+specs PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367305/normal_5ffbed43bd1a5.pdfIn PDF document text
    • http://freefire-gifts.com/basel_norms_noteso45ti.pdfIn PDF document text
    • https://zikotidule.weebly.com/uploads/1/3/4/6/134604350/b113a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483610/normal_600951cab3fac.pdfIn PDF document text
    • https://mogisitubetaw.weebly.com/uploads/1/3/4/4/134496388/fofoj-bukosu-vosomevitojeded-detulokape.pdfIn PDF document text
    • http://logvoz.ru/bejoxokuniip7l6.pdfIn PDF document text
    • https://xemibunadagom.weebly.com/uploads/1/3/4/6/134639404/zezariwijejexaderaj.pdfIn PDF document text
    • http://alcexpress1.xyz/christian_questions_and_answersoio3w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482869/normal_5fcc0c3f3edc7.pdfIn PDF document text
    • https://marotebage.weebly.com/uploads/1/3/4/7/134712984/9425592.pdfIn PDF document text
    • http://in-step.shop/safusagasjn250.pdfIn PDF document text
    • http://fumigatoff.online/27653417972b2ile.pdfIn PDF document text
    • http://supernefritroller.xyz/texas_food_handlers_course_answers6gy0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483346/normal_60002de67f2b3.pdfIn PDF document text
    • https://fogojokiverowur.weebly.com/uploads/1/3/0/9/130969702/16c30298def8.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_off0000d700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD700 5728 bytes
SHA-256: d199f902f67947cb276fea680ddf49cb561e7b31c10158458e19aeab555030c8
font_01_sfnt_off0000ea9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9D 14356 bytes
SHA-256: 2d3524f73963024594a9018468365f7b64ba8b648675a7ad994fd4fc0c44b756