Malicious PDF — malware analysis report

Static analysis result for SHA-256 c26492cdb032bf62…

MALICIOUS

PDF

49.3 KB Created: 2020-08-12 08:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac4a745aeab7ec6ffb9284c5b1063432 SHA-1: d9bef7cbaf638e9a257152018bfa05bec4ac33db SHA-256: c26492cdb032bf6246d57101e842510846469755dba5d965876dcce3a6b0e606
150 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for a redirector link. The document body contains a URL that points to a known malicious redirector, likely intended to lead the user to further malicious content. The presence of numerous other PDF links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to increase visibility and lure victims. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wb?keyword=metagenomics%20genomic%20analysis%20of%20microbial%20communities%20pdf
    • http://files.alexandraleshner.com/uploads/1/3/1/8/131871488/lowip_tixatex.pdf
    • http://pewadite.faithfestus.com/uploads/1/3/2/3/132302780/zutuxagakaxove.pdf
    • http://fidezup.loneelmcg.org/uploads/1/3/1/3/131383314/6478028.pdf
    • https://cdn.shopify.com/s/files/1/0431/4647/7722/files/refrigeration_and_air_conditioning_technology_bill_whitman.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/nofozijovodit.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/15588225315.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinavupomun.pdf
    • https://cdn.shopify.com/s/files/1/0437/9967/5041/files/wbpsc_junior_engineer_civil_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0431/1112/1063/files/70329900948.pdf
    • https://cdn.shopify.com/s/files/1/0432/2705/4237/files/38142915195.pdf
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/84774023933.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/guwumi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/bemakenivez.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_off000072a6.bin
d6f2da38a01876a80b4350bb41262fbf70438cf6ff0ffa73f9ee92893bcfe510		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A6 5604 bytes
font_01_sfnt_off000085a0.bin
c7dd542d62ff38a27f286ed4b80ea3eefe76193dbdf9f749ea651f5ac8533028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85A0 10840 bytes
font_02_sfnt_off0000a9ba.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9BA 4324 bytes

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