Malicious PDF — malware analysis report

Static analysis result for SHA-256 2afb204a15bc6acf…

MALICIOUS

PDF

40.6 KB Created: 2020-08-05 12:23:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4f1940e0ce7fdaf709dcbfc6bc79faf SHA-1: a0d01683eca983ed02563ee9f91b2f04655a58d0 SHA-256: 2afb204a15bc6acfa04471e2aa00230a6e7c97b3df79b57b729e21a7e6c6374a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the same lure text and URLs as the embedded links. This suggests the PDF is designed to act as a link farm, with the primary malicious intent being to redirect users to the ttraff.ru URL for further exploitation or phishing.

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.ru/wb?keyword=if%20i%20could%20fly%20sheet%20music%20pdf
    • http://files.desireandsuccess.com/uploads/1/3/1/6/131606546/rinukibuze-minevekes.pdf
    • http://files.camarillochamber.org/uploads/1/3/2/7/132740586/4181754.pdf
    • http://sibedar.moorechaplains.com/uploads/1/3/0/8/130813054/5878180.pdf
    • http://files.mrfinchsclass.com/uploads/1/3/0/7/130776413/minarigepujus.pdf
    • http://files.rumorhasitvt.com/uploads/1/3/1/4/131453436/xuputi.pdf
    • https://cdn.shopify.com/s/files/1/0435/0102/7493/files/da_5988.pdf
    • https://cdn.shopify.com/s/files/1/0429/4351/2732/files/10061052732.pdf
    • https://cdn.shopify.com/s/files/1/0438/0151/0045/files/mogonez.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/niligowijejolivomuwaluzid.pdf
    • https://cdn.shopify.com/s/files/1/0428/6945/7055/files/7417244118.pdf
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/jebuwejovu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2794/5889/files/tomtom_mydrive_connect.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rosetotirumeza.pdf
    • https://cdn.shopify.com/s/files/1/0428/0310/1863/files/2018_toyota_camry_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/16008736785.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.pdf
    • https://cdn.shopify.com/s/files/1/0435/2403/0618/files/ashok_kumar_singh_books.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_off00006056.bin
dabf4cbfc1ca009b9d540bfdfb9e6608c0f63890d8c08fad0e389855a64b9e68
pdf-font-stream PDF embedded font (sfnt) at offset 0x6056 5128 bytes
font_01_sfnt_off000071b0.bin
377742c2d773fa9ff760d5ae55184e44cce0d44a918d5334c557cb3040b46b4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x71B0 10424 bytes