Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ff66ab0eebce07c…

MALICIOUS

PDF

39.6 KB Created: 2020-08-20 11:50:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb7f9f09670e5b1c6c1cafba17c79f40 SHA-1: 9dbd2cc3c58312ce0439b1531d33d4fa446393db SHA-256: 0ff66ab0eebce07c38e763f05b1a440d9b2a022c3be383af2abdfb4b9e505a89
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, likely as part of a phishing or scam campaign. The embedded URL 'https://ttraff.cc/pify?keyword=america%2527+s+got+talent+video++2016' is a critical finding, indicating a malicious redirector. The document also hosts a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. No scripts were extracted, but the presence of malicious links is sufficient evidence of malicious intent.

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=america%2527+s+got+talent+video++2016
    • http://files.ollrichva.org/uploads/1/3/1/3/131380604/1789921.pdf
    • http://zupade.rsq-d.com/uploads/1/3/1/4/131483044/zevapoxolurotasor.pdf
    • http://files.shuswapvalleyestates.com/uploads/1/3/2/6/132683140/eb5700fb8.pdf
    • http://files.riversideministries.com/uploads/1/3/0/9/130969241/0476adc11.pdf
    • http://dimajebat.jksporthorses.com/uploads/1/3/2/8/132814930/dujuvobokijagarafad.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/4870643011.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zemivok.pdf
    • https://cdn.shopify.com/s/files/1/0444/3917/5335/files/employee_provident_fund_and_miscellaneous_act_1952.pdf
    • https://cdn.shopify.com/s/files/1/0428/9862/0569/files/juxenijiritenogujabaku.pdf
    • https://cdn.shopify.com/s/files/1/0434/9096/7714/files/65555748274.pdf
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/datuwat.pdf
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/xasutuzazin.pdf
    • https://cdn.shopify.com/s/files/1/0434/0544/3237/files/xudovisaliwonujeligebamo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/37939837292.pdf
    • https://cdn.shopify.com/s/files/1/0434/8959/1461/files/round_to_3_decimal_places.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_off00005bdd.bin
cbdffbc4f8a0ebb13b0f41fdcbf4389ce02e3a18df80b79de60346221633fe55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDD 5824 bytes
font_01_sfnt_off00006f9d.bin
f40d2d4918859007bfcb4b0502f37c9103126c04651cddda63df5cc32086988e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9D 10000 bytes

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