Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea3e173bb645e472…

MALICIOUS

PDF

33.9 KB Created: 2020-08-02 21:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6546d2640cbac4de68e04646a54d0f44 SHA-1: 33618d54d8f80eb966786a6eb143560f295fdd1a SHA-256: ea3e173bb645e472fe1e5c23bf2f1db236febb2c1e5958a6045a7fbae365f17d
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and phishing. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is disguised as a service manual. This redirector likely leads to further malicious content or exploits. The presence of a large number of external links, many hosted on Shopify, suggests a link farm designed to improve search engine ranking for malicious content.

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=2000+polaris+sportsman+500+service+manual+pdf
    • http://files.mypatternbreaker.com/uploads/1/3/1/4/131483266/misuwedixafug-sejamemuva-govilivinozeme-jifabojonekaxi.pdf
    • http://files.virtu.rocks/uploads/1/3/1/8/131856619/zipatetanef.pdf
    • http://files.apdisasterresilience.org/uploads/1/3/0/7/130775002/fulobufakaziw_bulexisuwi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/javubigutefimerakaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/6743/1320/files/zakalevagelafadomu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6356/6755/files/20439124806.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/2083179829.pdf
    • https://cdn.shopify.com/s/files/1/0434/1327/4780/files/fijawavi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2558/8639/files/wemijajopipupo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/42973267993.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/62094085546.pdf
    • https://cdn.shopify.com/s/files/1/0435/8946/8328/files/bagolopisa.pdf
    • https://cdn.shopify.com/s/files/1/0428/4855/1068/files/pats_marketplace._east_islip.pdf
    • https://cdn.shopify.com/s/files/1/0433/3810/5000/files/zopozus.pdf
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/19026253700.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_off00004602.bin
863850fe75b74662b8575f00a9cfcc987d7b452560eeab99987d25d1500e29f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4602 5664 bytes
font_01_sfnt_off00005940.bin
0f452a1551f283fef86bf701029bbad888d5e4e8e3a6e4eca54eae1171da0418		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5940 9744 bytes

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