Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a802141f410f034…

MALICIOUS

PDF

45.0 KB Created: 2020-08-24 02:16:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d323667d0c126bd6b450bfb84ffe06ac SHA-1: 3df913532bed157e4a852aa6cf249975fc384a06 SHA-256: 3a802141f410f0346bf6bfa032b6fde84cf40dcdab19ca0cae6e64eba1078177
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a user guide for an HP printer. The link leads to 'ttraff.ru', which is flagged as malicious. The document also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation to increase visibility. The presence of a 'download button' heuristic further supports the lure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=hp+deskjet+2622+user+guide
    • http://rolibemef.timkwrites.com/uploads/1/3/0/8/130814328/9764270.pdf
    • http://files.tdmxt.com/uploads/1/3/2/3/132303282/jolaga.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76222514852.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/6695846489.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/19011720263.pdf
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/11643284743.pdf
    • https://cdn.shopify.com/s/files/1/0433/4573/9941/files/82654441847.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25006313747.pdf
    • https://cdn.shopify.com/s/files/1/0438/9139/2664/files/chuyn_file_sang_excel_min_ph.pdf
    • https://cdn.shopify.com/s/files/1/0434/8349/6600/files/82117755221.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/sibiwefisunubiwepegeweja.pdf
    • https://cdn.shopify.com/s/files/1/0460/7134/9412/files/mabemanezeranezogila.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_off000062ce.bin
5f506f96885c68285abb08013964e969243e5a1cdb180af6bb27fe8127c8fd8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62CE 3724 bytes
font_01_sfnt_off0000700b.bin
eac5e4d23e37a4965200812ddcc7775a3bccdcef467d6619806cc24b7642149f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x700B 5272 bytes
font_02_sfnt_off0000821a.bin
e7914f7e7d050ff49d5ebc3d787ba079653faff96c061111d498a15a2489f66c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x821A 11020 bytes

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