Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ebd7171ca4557a6…

MALICIOUS

PDF

43.6 KB Created: 2020-08-05 08:27:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 073d3ae4e61a923281e974d9fc03fa6b SHA-1: d292e3740e5354e49d2a1c61c9a7f96121b68293 SHA-256: 7ebd7171ca4557a6facc8b8c8f8e2a7ec4928f628feb565bfc858932696d1fb4
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=cecelia+ahern+the+gift+pdf+free+download'. This URL is likely used to redirect users to a malicious site. The document body also contains this URL, reinforcing its role in the attack. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm designed to improve search engine ranking for 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=cecelia+ahern+the+gift+pdf+free+download
    • http://files.beechfieldumcbalt.org/uploads/1/3/2/3/132302859/xetosufuwuwora.pdf
    • http://files.yukonshinevalley.com/uploads/1/3/0/7/130739871/bivenoz-tesatanir.pdf
    • http://files.brandheroesacademy.com/uploads/1/3/1/0/131070786/depafokefiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/6197/6994/files/buxolofezitoxoduvi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/parisibudipaxetiwori.pdf
    • https://cdn.shopify.com/s/files/1/0439/2691/3179/files/beginners_python_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/bovuzuwugajukijuboravef.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/51375772023.pdf
    • https://cdn.shopify.com/s/files/1/0434/2389/1618/files/90472714790.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/ambitious_baba_insurance.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/big_bang_theory_bloopers.pdf
    • https://cdn.shopify.com/s/files/1/0433/7080/7459/files/gilijisuvorubigifeki.pdf
    • https://cdn.shopify.com/s/files/1/0433/6903/7982/files/zidiluwufatosujuke.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/gelonenotifonadu.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_off00005f8b.bin
3ae143746865a553b18fd4070e8d9df32ed1323b0466a931bf4f8c82d7fc2d9e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8B 5144 bytes
font_01_sfnt_off0000710d.bin
0b135c045d31c10ff14b0ba4bef6520aca18af2b220d53ad2c913f7d95878d09
pdf-font-stream PDF embedded font (sfnt) at offset 0x710D 10004 bytes
font_02_sfnt_off00009339.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9339 4324 bytes