Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ff14e9d83e5ad1f…

MALICIOUS

PDF

52.3 KB Created: 2020-08-06 10:50:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bcd1bdc75389ce6d4c170afde87f9b5 SHA-1: c4d0702d0fd5d2bbe41064428991357c8e38ff93 SHA-256: 2ff14e9d83e5ad1f2a86db0069b03e071b494d498b07201348aad408471c838d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with one heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'customer acquisition definition pdf' and the wkhtmltopdf tool, suggesting a lure. The primary malicious IOC is the redirector URL, which likely serves as a gateway to a phishing or malware distribution site.

Heuristics 3

  • 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.
  • 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=customer+acquisition+definition+pdf
    • http://files.castleviewbands.com/uploads/1/3/0/7/130775497/3122627.pdf
    • http://files.grahamstead.com/uploads/1/3/2/6/132695339/5476733.pdf
    • http://files.necfgsd.com/uploads/1/3/2/7/132740307/bonolekol-giditet.pdf
    • http://files.gmif.gmuforensics.org/uploads/1/3/1/6/131637047/3353059.pdf
    • https://cdn.shopify.com/s/files/1/0430/0544/4259/files/cervical_cancer_screening_ontario.pdf
    • https://cdn.shopify.com/s/files/1/0428/6873/6166/files/gezabufed.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5465/files/46300869505.pdf
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/32871306859.pdf
    • https://cdn.shopify.com/s/files/1/0446/7628/4569/files/water_pollution_consequences.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/chemical_properties_of_alkaline_earth_metals.pdf
    • https://cdn.shopify.com/s/files/1/0432/4225/8587/files/94526170124.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/wogowitaluwajedesajom.pdf
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/rimagefobituvizafobi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lomapatigusobotatijizu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/rujisafikuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/6824/3614/files/affairs_cloud_july_2020.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000726e.bin
61031c025c402552e064dc747071f959c1455cba369d684169054be84557260c
pdf-font-stream PDF embedded font (sfnt) at offset 0x726E 5300 bytes
font_01_sfnt_off00008459.bin
a095b8998abc376bb35d11eead6aebca20dc8e582eae536112d7f5af22b8d260
pdf-font-stream PDF embedded font (sfnt) at offset 0x8459 13240 bytes
font_02_sfnt_off0000aeb2.bin
988a316f543fb787c6e548b45acc8bfd59cad13da049e9ddbad57dfbfbb9e7cc
pdf-font-stream PDF embedded font (sfnt) at offset 0xAEB2 16120 bytes