Malicious PDF — malware analysis report

Static analysis result for SHA-256 a69826cde456cfb9…

MALICIOUS

PDF

46.4 KB Created: 2020-08-01 05:18:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c275104d0d0339cea09f0c6ca96af65b SHA-1: 8c06c49bfff5852b08982f27e1780dd7bc2d4f72 SHA-256: a69826cde456cfb90efa8eb556af2c5f420b880ca90b65abb7997372836e78d0
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF document contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to known malicious infrastructure at 'ttraff.ru'. The document body text, though heavily obfuscated, contains the same search query as the malicious URL, suggesting a lure. The presence of a callback phishing lure heuristic further supports a social engineering attack. The primary attack pattern involves redirecting the user to a malicious site via a link within the document.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/pify?keyword=va+nearest+living+relative
    • http://files.chillstonehouse.co.uk/uploads/1/3/2/6/132681201/3ce318f5bf.pdf
    • http://files.armstrongfamilylaw.com/uploads/1/3/0/7/130740264/daluwo_xarugawive.pdf
    • http://files.pfeveryone.com/uploads/1/3/0/7/130739570/fujade_kakoxavimodo_dafuzeduta.pdf
    • http://files.sjrathreekeys.com/uploads/1/3/0/7/130740513/712913.pdf
    • http://files.karlkueffel.de/uploads/1/3/2/6/132682623/miwegezif_sutebukulizuvu_sukav_xivavamazojo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/6087647775.pdf
    • https://cdn.shopify.com/s/files/1/0436/7450/1285/files/78990486949.pdf
    • https://cdn.shopify.com/s/files/1/0438/2870/7485/files/stihl_015_av_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0663/files/96637598755.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rapuz.pdf
    • https://cdn.shopify.com/s/files/1/0435/4798/4026/files/76722332257.pdf
    • https://cdn.shopify.com/s/files/1/0430/9437/6605/files/vuvaneze.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojijemorewowasimagaxo.pdf
    • https://cdn.shopify.com/s/files/1/0440/8826/2821/files/nasaresulunonowonugubefil.pdf
    • https://cdn.shopify.com/s/files/1/0429/6078/1465/files/vojiwunaj.pdf
    • https://cdn.shopify.com/s/files/1/0438/4758/1856/files/kumuzagabozutofalevadugi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/gigaduvaliru.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_off0000790c.bin
99ee4eb3977975a2ffd93e07b3ea450edd5cd7c0ce7050f655eaf66a1092976f
pdf-font-stream PDF embedded font (sfnt) at offset 0x790C 4880 bytes
font_01_sfnt_off000089be.bin
7a594470915ae88ecb4ccf38bdf5bc0a658ba91d7552226caadba3da628cd64b
pdf-font-stream PDF embedded font (sfnt) at offset 0x89BE 10284 bytes