Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8db464d9f21ea89…

MALICIOUS

PDF

44.6 KB Created: 2020-08-26 23:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 763abffa28cdb1ffba3b4a89200fd793 SHA-1: ed27a3db9d8c689fb87c954c8745aef6a007a767 SHA-256: f8db464d9f21ea89911109905bac6676bf8074e7178ae450efb796d97389ad2d
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) and are likely part of a link farm designed to obscure malicious destinations. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=office+yoga+routine', suggesting a lure related to office routines. The presence of numerous Shopify-hosted PDF links, while many are benign, is characteristic of SEO poisoning or link farm tactics to improve search engine ranking and distribute malicious content.

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=office+yoga+routine
    • http://xuson.myrules4life.com/uploads/1/3/1/1/131164250/zasisemarit-zowuwodimuf-gasugavewelo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1393/9101/files/jumble_puzzle_answers_for_september_19_2019.pdf
    • https://cdn.shopify.com/s/files/1/0440/0994/7301/files/6999194767.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/ps_i_still_love_you.pdf
    • https://cdn.shopify.com/s/files/1/0431/8658/5749/files/medea_euripides_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/5765/1613/files/demon_slayer_retribution_script.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5674/files/springing_tiger.pdf
    • https://cdn.shopify.com/s/files/1/0437/2784/7576/files/workplace_bullying_in_nursing.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/27915729376.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/weather_report_ambala_cantt_10_days.pdf
    • https://cdn.shopify.com/s/files/1/0435/1305/3338/files/tax_form_rut-_50.pdf
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/obc_caste_certificate_form.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_off000064ef.bin
fb268b46a811b7e1d3f8df2093e18bae8b666d71f68f971b52f6c873d910b9f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64EF 4848 bytes
font_01_sfnt_off00007587.bin
72273fbbba7c096cac41a4ba84d721fb6ea92578647a3b95f29fc1aa4fa60ee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7587 9980 bytes
font_02_sfnt_off000097b9.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97B9 4324 bytes

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