Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db5264f06c6f6b6…

MALICIOUS

PDF

73.2 KB Created: 2021-03-03 18:37:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0a07bed1bc17096881ef5d1f0043acd2 SHA-1: f95361984bacccdcbb8dd9922c6b8bb3c67e416d SHA-256: 6db5264f06c6f6b6a80fa218c32205822294df7dbe43206a8ec6150b68452b7c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=dave+ramsey+monthly+cash+flow+plan+excel PDF link annotation
    • https://sererepe.weebly.com/uploads/1/3/3/9/133999843/9216ad4da78.pdfIn PDF document text
    • https://cdn.sqhk.co/ropobemuma/bsicLih/piano_tutorial_apk_uptodown.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426262/normal_5ff16fc0dd456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470027/normal_5fd672676a070.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374521/normal_600f2054cacf8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476578/normal_602acde03151f.pdfIn PDF document text
    • https://cdn.sqhk.co/linaxezo/X9hahj6/status_video_barbie_doll.pdfIn PDF document text
    • https://cdn.sqhk.co/demexadol/johjKO7/nemuxopizinisamozobikiso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406812/normal_5fcf811c9c48f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420764/normal_600d6191cce05.pdfIn PDF document text
    • https://cdn.sqhk.co/sidamebo/ewhgYjf/download_game_idle_light_city_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/ejahhqw/itopod_perks_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369657/normal_5fde6936ad81a.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/libusamagowuvo/asme_section_8_division_3.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/pinnacle_video_capture_for_mac_free.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/67139400405.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_off0000e0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EB 5576 bytes
SHA-256: cee3ce1edede8e5b4c4eca8f5de4837a0a0c13265d83f6a01c7c1fa8e35ded24
font_01_sfnt_off0000f3e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E5 10556 bytes
SHA-256: 694f4bf288fd9565af9e130d56b539ab303134b2db8ca8ef54b72d12857c2d73