Malicious PDF — malware analysis report

Static analysis result for SHA-256 b99cf12490339cb4…

MALICIOUS

PDF

32.7 KB Created: 2020-08-19 13:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c9d8cfb5bcc91d3da5ba9be2db9e5d6 SHA-1: 3ee271a41f721846bff465513adb89577b5056bb SHA-256: b99cf12490339cb4bf3fc1dad90c0de6f5f64a1894d92bdfe550ff7fca71d2ee
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF SEO link farm. The primary malicious link, https://ttraff.com/pify?keyword=anbe+peranbu+mp4, is flagged as a known malicious redirector. The document body itself is heavily obfuscated but contains the same malicious URL, suggesting a coordinated effort to redirect users. No scripts were extracted, and the primary threat appears to be the malicious redirection infrastructure.

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=anbe+peranbu+mp4
    • http://lixewabu.turningpointbaptistchurch.org/uploads/1/3/1/4/131407406/7632914.pdf
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/13862775962.pdf
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/lulixomewusunexisu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4889/3606/files/auxiliary_verbs.pdf
    • https://cdn.shopify.com/s/files/1/0437/5838/7349/files/pagigavebulufadil.pdf
    • https://cdn.shopify.com/s/files/1/0437/8414/2997/files/automotive_interior_trim_parts.pdf
    • https://cdn.shopify.com/s/files/1/0430/7917/2257/files/free_employee_termination_form.pdf
    • https://cdn.shopify.com/s/files/1/0447/4303/2983/files/semillas_estelares_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0428/7699/3702/files/82106577658.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0448/files/vunavij.pdf
    • https://cdn.shopify.com/s/files/1/0434/1409/3986/files/delete_all_unread_emails_gmail.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/bikibopagunupuwabunemuzo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8720/0418/files/jovefixixu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3581/9173/files/fivinuduladikokazunupo.pdf
    • https://cdn.shopify.com/s/files/1/0436/0981/7251/files/history_of_addie_model.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_off000044f9.bin
c999f7c49162cc850f2b58a29b0c5a06d11adbab4928ac688f74ddfa4df1cfaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44F9 4972 bytes
font_01_sfnt_off000055c3.bin
d51524a53c7fc9a18145ccbe69f493c7c859bd565280e8d578284419958e0891		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55C3 9568 bytes

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