Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0249f69f04453bc…

MALICIOUS

PDF

50.6 KB Created: 2020-08-05 01:30:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bcb6287a3e8191f3c21e84f25c127785 SHA-1: 28ee4f223422d12299be54a43bfb472128b53727 SHA-256: b0249f69f04453bc65746fef29afa314fb5cd0e804bd6aee1e71956bae09664d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'applications of psychrophiles pdf' and the URL https://ttraff.cc/pify?keyword=applications+of+psychrophiles+pdf, suggesting a lure to a malicious site. The presence of a large number of external PDF links, many hosted on shopify.com, indicates a link farm strategy to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=applications+of+psychrophiles+pdf
    • http://juzaz.vagabondgeology.com/uploads/1/3/0/8/130813612/zudanorixibedidari.pdf
    • http://files.lopezanimals.org/uploads/1/3/2/6/132695244/xajizif.pdf
    • http://files.rockcreekgoldenirish.com/uploads/1/3/1/0/131070458/vujubik_kexexusiwiv.pdf
    • http://files.callawaycampaign.com/uploads/1/3/1/4/131406140/kizefupunifofaxiluga.pdf
    • http://files.wayofthemaster.ca/uploads/1/3/0/8/130814192/4b7aa30b.pdf
    • https://cdn.shopify.com/s/files/1/0427/9386/1279/files/basuzuwujedatavo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5697/2455/files/85141218121.pdf
    • https://cdn.shopify.com/s/files/1/0434/5397/2630/files/80466374098.pdf
    • https://cdn.shopify.com/s/files/1/0431/6371/3690/files/94916684545.pdf
    • https://cdn.shopify.com/s/files/1/0431/8999/3635/files/shoulder_angel_and_devil.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/84646975303.pdf
    • https://cdn.shopify.com/s/files/1/0439/9942/8766/files/direct_tv_remote_codes_vizio.pdf
    • https://cdn.shopify.com/s/files/1/0438/8365/9419/files/difojojuwono.pdf
    • https://cdn.shopify.com/s/files/1/0439/6072/9758/files/11x14_frame_walmart.pdf
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/58634421083.pdf
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/bacilos_gram_negativos_no_fermentadores.pdf
    • https://cdn.shopify.com/s/files/1/0433/3525/4171/files/79073812258.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008826.bin
f8f065618c54bb28c28c29d354ad083c81f1dcc3eb1ac68b053b6bb117be9780
pdf-font-stream PDF embedded font (sfnt) at offset 0x8826 5336 bytes
font_01_sfnt_off00009a50.bin
d542cdbf571ed3dbd0b37609ed2b7a857f1a44cbcc07c4970da67f48adce4b01
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A50 10220 bytes