Malicious PDF — malware analysis report

Static analysis result for SHA-256 0350490d303a100a…

MALICIOUS

PDF

44.1 KB Created: 2020-07-26 20:26:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8d552aea97c5bad22a2d942f5ad61c8 SHA-1: 9b1cb1dd991365c38e5a73ed4daf492193df3889 SHA-256: 0350490d303a100aad8bb1e440d3af9c9361fb2d62d0e52b206d103abdc3ad9f
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'football scouting sheet template'. The presence of embedded URLs and the ML classifier's high confidence indicate a malicious intent to redirect users to harmful content.

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=football+scouting+sheet+template
    • http://files.drjmorrone.com/uploads/1/3/0/8/130874124/nafewizodufasoxuvob.pdf
    • http://files.cycotron.com/uploads/1/3/1/8/131857920/6612e0.pdf
    • http://files.ontariomotorcyclelaw.com/uploads/1/3/1/4/131454262/9b679165.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/2875249738.pdf
    • https://cdn.shopify.com/s/files/1/0431/0168/3865/files/20188612695.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8007882555.pdf
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/lulipamupep.pdf
    • https://cdn.shopify.com/s/files/1/0437/6782/4533/files/79884748940.pdf
    • https://cdn.shopify.com/s/files/1/0429/9679/3503/files/793918870.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nomevorijodasulalo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/13674278096.pdf
    • https://cdn.shopify.com/s/files/1/0428/4963/2412/files/40162579729.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/52296151452.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/lifejawi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8535/files/15404230446.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jenodilibaxu.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_off00006e3b.bin
1d6260673b61642855eeff98810a44a5159e24e9bbb93ab954ae826c24cd0a56
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3B 5228 bytes
font_01_sfnt_off00007fd7.bin
3d42ae1f0eba7ba4c53cc3ba7d93c9698c8abbcd658127bc8beeffccdcf780a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD7 10372 bytes