Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea3c9ee7b0824c66…

MALICIOUS

PDF

47.2 KB Created: 2020-08-22 04:52:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 032b8b13bca22ac0ba0ea9d26de7f49f SHA-1: fee5828f2d6f6fa291dd492e674a53fd8d65ad44 SHA-256: ea3c9ee7b0824c66db61667db29dd8fdf0a81ca7196b654cd81bdb3844f96b17
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in a lure related to healthy eating guidelines. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be social engineering via a deceptive link within the document body.

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.com/pify?keyword=recommended+healthy+eating+guidelines
    • http://files.paulsullivanleather.co.uk/uploads/1/3/1/4/131413678/5cb7ddd.pdf
    • http://tekime.untiedbrewingco.com/uploads/1/3/1/6/131636725/laledetimudaj.pdf
    • http://files.amorim-neuropsychologue.fr/uploads/1/3/0/8/130873840/jebedoni_towitevakizepuv_filemi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/digital_electronics_basics_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0441/0041/9736/files/81961196256.pdf
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/45283663738.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/40114672996.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/android_version_history.pdf
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/lawufivonigogupasuwe.pdf
    • https://cdn.shopify.com/s/files/1/0431/4071/0562/files/makalah_anti_jamur.pdf
    • https://cdn.shopify.com/s/files/1/0435/2363/7402/files/larubanaridelonaja.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/sop_akreditasi_puskesmas.pdf
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/franchise_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/basil_seeds_nutritional_information.pdf
    • https://cdn.shopify.com/s/files/1/0429/8381/7375/files/nunamevipisuwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/63523964285.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0678/files/27717952411.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_off00006508.bin
b6d962ba9b0339843c0295d6851969e70f3a6b69c4d753645fc4e4b86eeca77c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6508 5364 bytes
font_01_sfnt_off00007724.bin
cc0aee19f64bf2a8bd8c33bf9e98b8f90f95cc19036feeb76382ae55e087f50f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7724 10304 bytes
font_02_sfnt_off00009a9b.bin
d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A9B 16060 bytes