Malicious PDF — malware analysis report

Static analysis result for SHA-256 60cb18410757b513…

MALICIOUS

PDF

45.7 KB Created: 2020-08-02 21:50:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04739ad94ff2f5542dd5ee17f9676ef4 SHA-1: 468d75a3596e4041337571b2e185460b3c92c4ee SHA-256: 60cb18410757b513a5eebfe0cf67a33f2c880a2e2cf085b9a88e9c6d6a2a4e25
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the primary malicious objective. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious infrastructure.

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=fap+titans+cheats
    • http://files.outandplay.com/uploads/1/3/1/6/131606874/nirusafifalobudowux.pdf
    • http://files.blaqbear.ca/uploads/1/3/0/7/130775126/2267918d5e.pdf
    • http://files.erinpatrickmiller.com/uploads/1/3/1/8/131871627/tivegivujori.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/7920/5031/files/64325604383.pdf
    • https://cdn.shopify.com/s/files/1/0436/3390/1726/files/luxonepajitedodivofisej.pdf
    • https://cdn.shopify.com/s/files/1/0434/0006/9285/files/18639373627.pdf
    • https://cdn.shopify.com/s/files/1/0440/2675/7270/files/38773097107.pdf
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/ps_2_mouse.pdf
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/jirupit.pdf
    • https://cdn.shopify.com/s/files/1/0432/4445/4056/files/79193725474.pdf
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/lemala.pdf
    • https://cdn.shopify.com/s/files/1/0428/7165/2508/files/annual_report_apple_2020_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0434/6393/4105/files/victoria_s_secret_bra_size_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0431/4778/8450/files/bavinixasowev.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31670740491.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_off0000749a.bin
8fa2af4d5d10b661108df39dbe6b702146b231bcdc3467262f61ac8910ead8d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x749A 4848 bytes
font_01_sfnt_off00008519.bin
a6bfe09a0e16daa8dbe4b381cd0b9dbefd3a5411c4ada25a7cc67d0be59fc25b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8519 10908 bytes