Malicious PDF — malware analysis report

Static analysis result for SHA-256 94217a85c36954e0…

MALICIOUS

PDF

44.9 KB Created: 2020-08-09 05:49:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 845a638ae2ea9b41692f4ecb73a9ff6b SHA-1: cc78e44adeb1f463811ad5a516dd08cdd7dfed8a SHA-256: 94217a85c36954e06310f678a3a5d10cda0b58d43b900c0dbc62e1ec09290503
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic to drive traffic to malicious sites. The primary malicious URL identified is https://ttraff.ru/pify?keyword=battery+size+chart+pdf, which is likely used to redirect users to a phishing or malware distribution page.

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/pify?keyword=battery+size+chart+pdf
    • http://files.afterhoursbandus.com/uploads/1/3/0/8/130874533/gilepinulom-girelumu-gonojabe-xoxatudapu.pdf
    • http://files.canappelafarm.com/uploads/1/3/1/3/131397960/tukige.pdf
    • http://sukunu.nourishedpath.net/uploads/1/3/2/7/132712315/3659751.pdf
    • http://files.expressionsofvoice.com/uploads/1/3/0/7/130739883/89988de43f.pdf
    • http://files.travismulhauser.com/uploads/1/3/2/7/132740723/116618.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/keycloak_rest_api.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/5031421870.pdf
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/character_sheet_pathfinder.pdf
    • https://cdn.shopify.com/s/files/1/0435/9671/0047/files/64768170216.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25781613666.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3556/files/33524497854.pdf
    • https://cdn.shopify.com/s/files/1/0428/6971/9196/files/gaxixuk.pdf
    • https://cdn.shopify.com/s/files/1/0439/1275/7400/files/juboro.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/86412411031.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/78667074979.pdf
    • https://cdn.shopify.com/s/files/1/0440/2230/0822/files/jawimule.pdf
    • https://cdn.shopify.com/s/files/1/0440/3236/0613/files/12562892817.pdf
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/reading_for_gist_activities.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_off000070bb.bin
649cee7d7599a2b6e1a0791ed80f5547190b4fea382e524148a016b002cecb49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70BB 5412 bytes
font_01_sfnt_off00008335.bin
a7c64c2f3cddaaa49c78f9ababa4ddf6801879983411f60d0c51b42b6071abfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8335 10344 bytes

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