Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b396d894f3325e…

MALICIOUS

PDF

39.6 KB Created: 2020-10-03 10:09:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ec3acb1f9fee7782e00742c603d8bb5c SHA-1: f81e1042d7efcbf16a234da0452a1a639ca0422e SHA-256: 10b396d894f3325ec49e8398185dc26d393608a04253ba5372b9ce8d8be59a17
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?keyword=copenhagen+infrastructure+partners+annual+report In PDF document text
    • http://geteg.hermanusactivities.net/uploads/1/3/0/7/130738732/rigujipefolik.pdfIn PDF document text
    • http://files.burgandysings.com/uploads/1/3/1/3/131398360/3c03613db03b43f.pdfIn PDF document text
    • http://gokarup.yscprosthodontics.com/uploads/1/3/1/4/131454683/jisigexikekonenixa.pdfIn PDF document text
    • http://files.upstagingdesign.com/uploads/1/3/1/4/131482996/fajanesejefesuv.pdfIn PDF document text
    • https://site-1039500.mozfiles.com/files/1039500/38848842868.pdfIn PDF document text
    • https://site-1036951.mozfiles.com/files/1036951/88908408712.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6789/2131/files/62362210187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7869/4565/files/manual_de_lectura_e_interpretacion_de_planos_de_construccion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8355/4202/files/real_steel_wrb_mod_apk_new_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7713/0658/files/xetipovibefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6133/0598/files/dewalt_chop_saw_stand_accessories.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EE5 5184 bytes
SHA-256: 7f60ecbdd8045d1f2bfbfa2fb0a27674b7f3e242fab93a40bdb4ae427c7d6b47
font_01_sfnt_off00006083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6083 10232 bytes
SHA-256: 1e0be31760a5e7de1e45daa4f2a6606252d8789f06c5419f63bb11bed8010c5e
font_02_sfnt_off00008370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8370 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378