Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac48dd9e9a24f5a2…

MALICIOUS

PDF

36.6 KB Created: 2020-08-03 09:56:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97de7b2e316bfde43cbf4365ddd097b5 SHA-1: 9d1d47244c8a0e411c756207b12074ff7e0b8c45 SHA-256: ac48dd9e9a24f5a21c4ed2f8665166da7706681cf86c0ea23b1f2331c0e0a4cf
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.com/pify?keyword=amls+pdf+download'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The ML classifier also strongly indicated maliciousness. The document body contains the redirector URL, suggesting it's presented to the user as a clickable element.

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=amls+pdf+download
    • http://files.educationalplaydates.org/uploads/1/3/1/4/131453045/36560.pdf
    • http://files.rachelsweetdesign.com/uploads/1/3/1/3/131398479/vikebimixil_temenitifuk_dukemub_detidiwoledar.pdf
    • http://files.beavercrossministries.org/uploads/1/3/1/8/131872149/dulaxo_wopuwelumatelup.pdf
    • http://files.hopeawaitsministries.com/uploads/1/3/1/4/131453283/2146361.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/riduxagalowifaxotaraloga.pdf
    • https://cdn.shopify.com/s/files/1/0429/3967/8886/files/sotobofasusoranuxazojer.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3907/files/63029500270.pdf
    • https://cdn.shopify.com/s/files/1/0430/7222/5442/files/nerasudelemudijuloxejanuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/7740/2778/files/8831096748.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0117/files/dreamweaver_free_downloads.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/gejujerafawenakuxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8042/5370/files/95425738365.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0811/files/vejobaxivifoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/18283956098.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0392/files/93815882307.pdf
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/73691748314.pdf
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/89839247480.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/todexarim.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/zugipeviwobefegemuki.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/
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005016.bin
a1feb2ae0992ef56511f51d59b36f29b9cff89df58f66af8a54c5f32f74cde43
pdf-font-stream PDF embedded font (sfnt) at offset 0x5016 5172 bytes
font_01_sfnt_off000061b4.bin
f90afbe93973c23fc6817f2e719273a9b28fd982b4bb8d735df25f7b21b6a46b
pdf-font-stream PDF embedded font (sfnt) at offset 0x61B4 10528 bytes