Malicious PDF — malware analysis report

Static analysis result for SHA-256 86e4709fa3be0296…

MALICIOUS

PDF

43.5 KB Created: 2020-08-01 00:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8572cbacff12f06c92ee7bdd83e5027f SHA-1: a8ca4651df11216a73ee074c487f88cd958ab465 SHA-256: 86e4709fa3be02968250b31a58090b77001a04769ca721e2570914f8509f1ee0
154 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating it's a malicious redirector. It embeds numerous links, including one to `ttraff.com`, which is known malicious infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for "mining trainer" related content, directing users to the malicious URL. The presence of embedded URLs and the redirector link strongly suggest an attempt to lead the user to a malicious site, likely for phishing or malware distribution.

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=mining+trainer+orgrimmar
    • http://files.nonakaconsulting.com/uploads/1/3/1/0/131070247/7419a27ccca263.pdf
    • http://files.spanishhorsebreedersuk.co.uk/uploads/1/3/1/1/131163976/a01281e51a75f.pdf
    • http://files.mywinningjewelry.com/uploads/1/3/1/3/131383754/6696617.pdf
    • http://files.katherinedolen.com/uploads/1/3/1/8/131856394/6281d3449a.pdf
    • http://files.vanessajaynefineart.com/uploads/1/3/1/4/131453990/buwotolozebageb_pileramate_topozok.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lomapatigusobotatijizu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8003629611.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/febulupo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8695/4139/files/duguxewavananabopebis.pdf
    • https://cdn.shopify.com/s/files/1/0432/7348/6496/files/livoderiniwedesazuvikag.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/48618015626.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/31107824328.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2097/files/43464154147.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/dolejusiwud.pdf
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/mamatuj.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_off000064c4.bin
0c135e9e8924e60aa55b11e8e3a3f1816cd14249ca1773105c51b9e5af2e92c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C4 4800 bytes
font_01_sfnt_off00007510.bin
825cae6c24f828fc979108699bc425b50f8f5beaa023008575e569acc6829ec4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7510 14524 bytes

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