Malicious PDF — malware analysis report

Static analysis result for SHA-256 d307a06b3360f2b6…

MALICIOUS

PDF

68.9 KB Created: 2021-02-15 06:24:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 926de3d7a0a8e42056738b23c7b7241b SHA-1: cc3b2a4a16d1a2342c3f690a76d3d298d49a959e SHA-256: d307a06b3360f2b6a88e8d4e43f4cfac96396dd33682ee14e810f7a5cc3c831f
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://seumenha.ru/wix?keyword=tofw+2020+idaho+falls PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4403141/normal_5ff543912d85f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445114/normal_5ffbc10cf2a0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427499/normal_5ff414ae8b404.pdfIn PDF document text
    • https://supavutoni.weebly.com/uploads/1/3/4/7/134713891/087726e660.pdfIn PDF document text
    • https://cdn.sqhk.co/datolabevev/Thd9uja/tiny_tower_vegas_what_does_dream_job_do.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384154/normal_5ff2113693e1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403540/normal_601fe62fe40bc.pdfIn PDF document text
    • http://myfirstsite.xyz/debut_video_capture_full_version_crackehct0.pdfIn PDF document text
    • https://guwifanifinib.weebly.com/uploads/1/3/2/7/132740319/8acdb23778d.pdfIn PDF document text
    • https://sojagifuwolu.weebly.com/uploads/1/3/4/6/134689160/1036134.pdfIn PDF document text
    • http://baltika-trans.ru/autocad_2020_failed_to_install_error_code_160351n4a.pdfIn PDF document text
    • http://bestrongbyg.com/hacker_dragon_cityr7kao.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/bevarolimesale/xakezizebomidalewev.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/70515722031.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/persuasive_techniques_in_advertising_answers.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_off0000d19d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19D 5212 bytes
SHA-256: 773d8d882e87e7aaa980b945ea7c088e0b3e805984450b0d0a863eba4892ad2c
font_01_sfnt_off0000e371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE371 10464 bytes
SHA-256: be15d0041599f1ae037638d67ead8f770db88bf3f3e1b58af026763281e5993e