Malicious PDF — malware analysis report

Static analysis result for SHA-256 d170d494c1e7fd0c…

MALICIOUS

PDF

37.5 KB Created: 2020-08-22 08:21:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f907a3bd7d100a1c08079b4770ba67c SHA-1: c3c3d5cfaea1975eadd716d42bc272bae1bf7b2f SHA-256: d170d494c1e7fd0c5d9ef64b97a2589f34f9f6ef6afc472cef6237d202b38696
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, forming a link farm. One of these links directs to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body appears to be malformed or obfuscated, but the presence of the redirector and the link farm strongly suggest a malicious intent, possibly for phishing or malware distribution.

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.cc/pify?keyword=aambala+tamil+movie+song++masstamilan
    • http://files.elliottfamilyreunion.com/uploads/1/3/2/6/132682051/a61492b.pdf
    • http://gopusifep.samniquekahalsey.com/uploads/1/3/2/3/132302921/5486264.pdf
    • http://files.colossalsportsent.com/uploads/1/3/1/4/131437885/bawolabisikojumovo.pdf
    • http://rusas.allaynewebster.com/uploads/1/3/0/8/130874254/66f4f.pdf
    • https://cdn.shopify.com/s/files/1/0434/7346/9597/files/raspberry_pi_commands.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/86838001269.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/94563890902.pdf
    • https://cdn.shopify.com/s/files/1/0460/1076/1377/files/kivomenuzirupaber.pdf
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/morth_technical_specification.pdf
    • https://cdn.shopify.com/s/files/1/0433/9662/8641/files/job_application_format_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/mw3_hacks_xbox_360.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/58428516242.pdf
    • https://cdn.shopify.com/s/files/1/0428/8951/1071/files/16593759348.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/urticaria_cronica_espontanea.pdf
    • https://cdn.shopify.com/s/files/1/0434/1281/6034/files/lefapimoruvipira.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_off00004cfa.bin
e4e3ca17c81e0ae67e5449f35e4fae4b718b5e87611de5cc0e29cec9d17d0609		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CFA 5096 bytes
font_01_sfnt_off00005e4c.bin
533010de438a71b68e9f930655c97e152fb0bcae42bff58db09b77f4f459922e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4C 13756 bytes

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