Malicious PDF — malware analysis report

Static analysis result for SHA-256 62382a6ef721c38a…

MALICIOUS

PDF

33.1 KB Created: 2020-08-27 21:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a582efa14eaa51f3570e3a8f53bc2f20 SHA-1: 05917297c988c34b18644b0545208b4221e67e11 SHA-256: 62382a6ef721c38af1c7c7ea0d2034af7a6436d6c47e0f14478486a127f9e106
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which is identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'Pioneer avh- x4500bt manual'. The presence of numerous PDF links, many pointing to Shopify, suggests a link farm or SEO manipulation tactic to disguise malicious intent. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.com/pify?keyword=pioneer+avh-+x4500bt+manual
    • http://vupiv.foxfieldrecoverymission.org/uploads/1/3/2/3/132302868/kanipuwubug.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/kalutazajurun.pdf
    • https://cdn.shopify.com/s/files/1/0429/4072/7463/files/wesofudigapow.pdf
    • https://cdn.shopify.com/s/files/1/0437/9289/2053/files/classic_wow_alliance_warlock_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/4709/9287/files/gulebutajebaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/kalajogelezu.pdf
    • https://cdn.shopify.com/s/files/1/0439/0486/0328/files/arabian_peninsula_map.pdf
    • https://cdn.shopify.com/s/files/1/0437/8460/1752/files/50980113226.pdf
    • https://cdn.shopify.com/s/files/1/0432/8525/0216/files/gatatejazaxofaxiwunubem.pdf
    • https://cdn.shopify.com/s/files/1/0431/4831/2736/files/information_system_analysis_and_design_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0437/7460/7514/files/36773882171.pdf
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004457.bin
570eb56e0958046c3592bd371bb92abef3f263be071775bf8ea9bf32bf3f586f
pdf-font-stream PDF embedded font (sfnt) at offset 0x4457 5404 bytes
font_01_sfnt_off000056a3.bin
880ab629a61333578a948b33bfd5f808161f1a2e215ce8dc94d719591b12b4cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x56A3 9864 bytes