Malicious PDF — malware analysis report

Static analysis result for SHA-256 716954dff34c7df5…

MALICIOUS

PDF

40.0 KB Created: 2020-08-19 14:37:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b973fb932e2a0a1c2aa8de7e04d23249 SHA-1: 04ab086669c4b9c1a24f70ff38e3eaed52c37ef4 SHA-256: 716954dff34c7df5e83b859f9564051c5a69db7b7c9b2ce1f84a71db5cd80c51
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, with one identified as a malicious redirector and others forming a link farm. The document body, though garbled, contains text related to 'best games to play online no' and a URL that appears to be part of the malicious redirection chain. This suggests a phishing or content-scraping lure designed to drive traffic to malicious sites.

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.cc/pify?keyword=best+games+to+play+online+no
    • http://files.luciadisanto.com/uploads/1/3/1/8/131856907/legafisuva-zawewaninose.pdf
    • http://files.illustrioustees.com/uploads/1/3/1/3/131380000/dobaxukatolulizuw.pdf
    • http://katetodo.quilcenebiblechurch.org/uploads/1/3/1/4/131407300/a58dc.pdf
    • http://files.peschketruckinginc.com/uploads/1/3/0/9/130969572/8465fb.pdf
    • http://jizezose.dazeyjayne.com/uploads/1/3/1/6/131636947/9055105.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0435/4614/9023/files/lewis_sperry_chafer_systematic_theology_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/9570/3195/files/zinetorinejizodifa.pdf
    • https://cdn.shopify.com/s/files/1/0437/1133/2503/files/75867836452.pdf
    • https://cdn.shopify.com/s/files/1/0448/0575/0946/files/86467453732.pdf
    • https://cdn.shopify.com/s/files/1/0432/7312/6052/files/viwupuvejabu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7674/7413/files/bearing_number_identification.pdf
    • https://cdn.shopify.com/s/files/1/0444/3032/7975/files/carmeuse_holding_sa_annual_report_2017.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4540/files/internal_body_parts_of_cow.pdf
    • https://cdn.shopify.com/s/files/1/0430/4932/0610/files/86682983144.pdf
    • https://cdn.shopify.com/s/files/1/0431/6626/9600/files/tp_minecraft_command.pdf
    • https://cdn.shopify.com/s/files/1/0430/4509/3533/files/14569218998.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/34703382137.pdf
    • https://cdn.shopify.com/s/files/1/0435/7377/2447/files/report_d_echeance_traduzione.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000530b.bin
f86e092f1dec3a9d71357589c823f018ed62b9136e07f3ff6252b6c37ca65f19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x530B 4980 bytes
font_01_sfnt_off000063ec.bin
63140dce887bfc2cbbd05b523ca72474f89b7b44fa4609946b7c365bbe02d511		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63EC 9644 bytes
font_02_sfnt_off000084f1.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84F1 4324 bytes

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