Malicious PDF — malware analysis report

Static analysis result for SHA-256 85caf78ba979579a…

MALICIOUS

PDF

45.7 KB Created: 2020-08-25 12:33:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 782784d186249010f3affbaca7bad995 SHA-1: b7221d3ac6325d4b97059f5c05494467ee95a0aa SHA-256: 85caf78ba979579a7fde029e1a41b6de593e4712b60e3ed6d27d3958cc6b9432
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, suggesting a phishing or malware distribution attempt. The document body and embedded link annotations point to a lure related to a 'scouting report', which is likely a pretext to encourage clicks. The presence of numerous external PDF links, many pointing to Shopify domains, further indicates a link farm or redirection scheme designed to obscure the ultimate destination.

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.ru/pify?keyword=davontae+harris+scouting+report
    • http://vimikog.college-elf.com/uploads/1/3/1/4/131406676/7459252.pdf
    • http://files.funinstruments1.com/uploads/1/3/1/3/131378990/64d7d20f0c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5295/6838/files/bodufabudunezu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9623/5415/files/asexual_reproduction_in_animals_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0439/8009/5646/files/nidugexabuvamuveworum.pdf
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/68465765576.pdf
    • https://cdn.shopify.com/s/files/1/0431/6486/0575/files/70469447166.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/google_sheets_count_if_substring.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5502/files/telecharger_baridimob_apk.pdf
    • https://cdn.shopify.com/s/files/1/0438/7418/9480/files/13720677797.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/political_ontology_colin_hay.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cd1.bin
a3dfa7d082d54e1a875c14ffc42f4402dcbc7bedc0504619b7b984e343141b18
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD1 5224 bytes
font_01_sfnt_off00006e9a.bin
097ebe4fc570b7e4b9dcb7b513cad3089e02f7eadc0d2ce4023a709ebc8736c3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9A 10584 bytes
font_02_sfnt_off000092f9.bin
a05ba7048ff315d7715d81018bb38a0bb415fedf94ebc30031a49e41ba80813b
pdf-font-stream PDF embedded font (sfnt) at offset 0x92F9 16752 bytes