Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d4e3796bf3dce8a…

MALICIOUS

PDF

39.9 KB Created: 2020-08-24 01:40:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a5431d00b3e83f33dd2096b78341f28 SHA-1: 6a259d32da27fb74cc006f8838600e901c87a487 SHA-256: 2d4e3796bf3dce8a307556070b7a3eeed2f704c8b792aa54520802bd82a221c0
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, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=en+iyi+canli+tv+app+android, which is flagged as a malicious redirector. The document body contains garbled text but also includes the malicious URL and several benign-looking Shopify URLs, suggesting a link farm designed to obscure the malicious destination.

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=en+iyi+canli+tv+app+android
    • http://sagitag.jesusnotjesus.org/uploads/1/3/1/0/131070750/lonizotiduriz_lanoliponevatu_kolewub.pdf
    • https://cdn.shopify.com/s/files/1/0433/3476/2664/files/71222040682.pdf
    • https://cdn.shopify.com/s/files/1/0433/5088/4505/files/nulowebiwigesepugovube.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5494/files/jixopixed.pdf
    • https://cdn.shopify.com/s/files/1/0434/0042/9731/files/zasojemiguwukog.pdf
    • https://cdn.shopify.com/s/files/1/0433/7231/4789/files/baby_shower_checklist.pdf
    • https://cdn.shopify.com/s/files/1/0430/0449/3987/files/vumilege.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/lalanofanajuxid.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4383/files/75596724973.pdf
    • https://cdn.shopify.com/s/files/1/0432/9606/3643/files/30819157170.pdf
    • https://cdn.shopify.com/s/files/1/0447/9316/8023/files/ielts_speaking_topics_with_answers_band_9.pdf
    • https://cdn.shopify.com/s/files/1/0431/5139/2922/files/92441417946.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.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_off00005b45.bin
10aef42f7cf5418f75b5fa1ff6f47b9e300b8def2f4603ad238179afb7729a4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B45 5008 bytes
font_01_sfnt_off00006c62.bin
0bc684619c5c6f41b934a2108afb253b39a0e240c6f93428e883b99e4c173f58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C62 11896 bytes

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