Malicious PDF — malware analysis report

Static analysis result for SHA-256 90a1863fe0685557…

MALICIOUS

PDF

51.4 KB Created: 2020-08-08 21:52:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d70d4be163ee340bd776c3551e9c5d5 SHA-1: 446e750cfb806223d6404514bed125cc95af07de SHA-256: 90a1863fe0685557e56ccfd8c0079d48d480407b47255f51a9bd5147b7331bbb
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm, with numerous links hosted on cdn.shopify.com and other domains, designed to obscure the malicious destination. The document body, though heavily obfuscated, contains the same lure text and URLs, suggesting a social engineering attempt to trick users into downloading further malicious content. The presence of a 'download button' heuristic further supports this attack pattern.

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.com/pify?keyword=catholic+malayalam+bible+pdf+free+download
    • http://files.annajmacdonald.com/uploads/1/3/1/4/131454586/sepunogeroba-petixufijo-kugera.pdf
    • http://files.nickjosephcomedywriting.com/uploads/1/3/1/4/131452803/wamizosiv.pdf
    • http://fosirav.nicoleraimo.com/uploads/1/3/2/7/132710712/xumefe.pdf
    • http://files.featherhaven.org/uploads/1/3/2/3/132302870/watevivaf.pdf
    • http://files.peezda.com/uploads/1/3/1/4/131408954/gulusunamubax_rimov_bixavedu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rojifibopi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6819/3952/files/noida_road_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/lijutosagiwololizoga.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/61463559988.pdf
    • https://cdn.shopify.com/s/files/1/0435/5129/3603/files/lecrae_tell_the_world.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/26940616718.pdf
    • https://cdn.shopify.com/s/files/1/0431/3425/5266/files/81408340795.pdf
    • https://cdn.shopify.com/s/files/1/0430/3175/6957/files/2656874175.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/48599628151.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/28744766549.pdf
    • https://cdn.shopify.com/s/files/1/0433/6130/4728/files/57014108397.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86562581376.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_off00006801.bin
3285c5d282a6b309a5181c799a844d5031061342e164843c04d9d852f7b4f7a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6801 5456 bytes
font_01_sfnt_off00007a72.bin
74e32a10093b1c5a8864a911daf90d9f58079117373a2bb40d786986f7571f19
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A72 7592 bytes
font_02_sfnt_off00009357.bin
8511aa4c7752ce79a2c8b099b16d55383b7fee0725f19509d4157ba24891bdee
pdf-font-stream PDF embedded font (sfnt) at offset 0x9357 14492 bytes