Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d842e718b2e17c9…

MALICIOUS

PDF

67.6 KB Created: 2021-02-16 20:58:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 097a3877e7faf0f193d5239a22c34325 SHA-1: 87c38718db8876d5727385aab7bb9214b507932c SHA-256: 0d842e718b2e17c9c92e1438e2247248db4f0e69034756232c995256549d465c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wix?keyword=witchery+curse+of+hell+on+earth PDF link annotation
    • https://ziregorex.weebly.com/uploads/1/3/5/3/135351653/rotugodevilejunaj.pdfIn PDF document text
    • https://mosaminaworite.weebly.com/uploads/1/3/1/6/131636744/babajenoposidubufi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410016/normal_6000ce148a57e.pdfIn PDF document text
    • https://cdn.sqhk.co/pawosuku/eiexuia/ncaa_football_schedule_2020_week_2.pdfIn PDF document text
    • https://vakenufepuxino.weebly.com/uploads/1/3/4/5/134529081/4839035.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453105/normal_5ff285732721c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443602/normal_5fdcff273d030.pdfIn PDF document text
    • https://wezenazuzive.weebly.com/uploads/1/3/4/7/134764498/2887641.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425238/normal_600897898c229.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450634/normal_601532f81639e.pdfIn PDF document text
    • http://svarka-aurora.online/31391551564gvng0.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/ihTNdic/guwipomokusez.pdfIn PDF document text
    • http://prostosite.site/nostalgia_ice_cream_maker_walmart9p4rj.pdfIn PDF document text
    • https://cdn.sqhk.co/nepusoliweda/ihjiEix/boribu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369665/normal_5fdc62da18a6c.pdfIn PDF document text
    • http://carbackseat.site/xolitvlqe1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jonutozomekuna.epizy.com/madras_university_question_paper_with_answer_key.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_off0000cdc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC0 5084 bytes
SHA-256: c147769066f5a6e910ad00336c101b42b8a187fda3b00337e83965f4be9dd1cf
font_01_sfnt_off0000df1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1E 10016 bytes
SHA-256: b180122e46446596e257576229cffe8dfc3a87ce839db7bd23a0cb7eee41a901