Malicious PDF — malware analysis report

Static analysis result for SHA-256 d416d500922b68c0…

MALICIOUS

PDF

73.2 KB Created: 2021-02-24 22:09:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ea9200c318e910a3d932ec86d41d692 SHA-1: 97f62e699e2279556b0f4c1459e4e65a11be4d8d SHA-256: d416d500922b68c0db6ecdd49a419e5df46fc4f16d7aabd515172db045dbd3c4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating a phishing or malware distribution attempt. It contains a large number of external links, many pointing to PDF files hosted on Weebly and CDN domains, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious content. The primary external URI points to a search result page for a product manual, likely a lure to entice users to click through to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/wix?keyword=bissell+powersteamer+pro+deluxe+manual+8804
    • https://vusexojepaxeva.weebly.com/uploads/1/3/4/0/134096357/7465466.pdf
    • https://zokaduxenatased.weebly.com/uploads/1/3/1/6/131637020/19acc38.pdf
    • https://xokewetabido.weebly.com/uploads/1/3/1/8/131857041/b1c86c.pdf
    • https://satizivuzaked.weebly.com/uploads/1/3/4/3/134383512/simopugufobifa_zovepij.pdf
    • https://setasavapu.weebly.com/uploads/1/3/2/6/132683041/fc4ac9be3282.pdf
    • https://merogowaxoku.weebly.com/uploads/1/3/1/0/131069891/a48a2d92c254b.pdf
    • https://cdn.sqhk.co/jasolizilaf/eYgfxgh/vobudukuvina.pdf
    • https://cdn.sqhk.co/vonewesipan/QVieia8/guwepafoketukuleruratesem.pdf
    • https://cdn.sqhk.co/wojusipi/csjjhji/filter_coefficients_from_impulse_response_matlab.pdf
    • https://cdn.sqhk.co/jivazufevi/jigNrl8/god_of_war_the_card_game_rulebook.pdf
    • https://cdn.sqhk.co/jisepozidis/Gb2gjA9/mewimudedilaf.pdf
    • http://domainlimax.xyz/smashbox_bb_cream_discontinuedvioy5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d426.bin
ba8c606ca7f741e7d1ba10263f18e37954b424c9092530d3f8c9805c5955f6e9
pdf-font-stream PDF embedded font (sfnt) at offset 0xD426 5620 bytes
font_01_sfnt_off0000e73e.bin
05cf20d68747482fb46a253aaa6cb3ff44b9758a9837a67f91b35609bba6f746
pdf-font-stream PDF embedded font (sfnt) at offset 0xE73E 10092 bytes
font_02_sfnt_off000109d0.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x109D0 4324 bytes