Malicious PDF — malware analysis report

Static analysis result for SHA-256 465acbb386b04c7a…

MALICIOUS

PDF

70.3 KB Created: 2021-02-13 19:51:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 030afb1862012a136933913fca9d6667 SHA-1: 29a3df25a88c8d11f68b67a129df33be012da874 SHA-256: 465acbb386b04c7aa0a1dac382c1909c3e46835e83f3be10c674a35c327aec04
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://baarspo.ru/wb?keyword=file%20manager%20android%208 PDF link annotation
    • https://bubafoxir.weebly.com/uploads/1/3/0/8/130874260/tumiso-juvijukawesux-lirov-jukojumojepe.pdfIn PDF document text
    • https://geperibikabagop.weebly.com/uploads/1/3/1/4/131409385/6877c519c0b50c9.pdfIn PDF document text
    • https://cdn.sqhk.co/tisumusef/dD8gdRD/real_followers_for_instagram_apk_new_version.pdfIn PDF document text
    • https://cdn.sqhk.co/bodavadu/hggjiiV/jolly_phonics_activity_book_free_download.pdfIn PDF document text
    • https://kominalekawer.weebly.com/uploads/1/3/1/6/131636772/xetodewegodixol.pdfIn PDF document text
    • https://dufofisejufosu.weebly.com/uploads/1/3/4/8/134875198/xutipapumuji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373004/normal_6024f41a39a4b.pdfIn PDF document text
    • https://waxevinibiwe.weebly.com/uploads/1/3/0/9/130969944/nifaramiraji.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/gasodamuza/avast_free_full_version_with_key.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/73670735551.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/24627243986.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/busch_gardens_tampa_park_map.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/69971876665.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/53841091831.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/antibiotics_inhibiting_protein_synthesis.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_off0000d67d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD67D 5116 bytes
SHA-256: 1e97e4355cfa88e698d2031d69c0f2d4b077daa34a49ee11c958fa91446bebfe
font_01_sfnt_off0000e7c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C6 10732 bytes
SHA-256: a7065aee7f6fe6e2be88344992395a1e13896cf59cb17f822a4e0c6511410499