Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5b2c0c4e90ade11…

MALICIOUS

PDF

40.8 KB Created: 2020-08-23 23:26:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 487a2c3f791cd5b6469ad5fe3bdc7079 SHA-1: bab1e7efbca649d1af1eba37cc7c763b389d660f SHA-256: a5b2c0c4e90ade1196525e815d05e8c02284362bbebdeb81edd683146b7f9a34
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used to redirect users to malicious websites. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used here with a query parameter suggesting a lure related to 'crash bandicoot pc demo'. The document body, though heavily obfuscated, also contains this URL and other links pointing to Shopify domains, some of which are confirmed benign, but others are unknown or malicious. This suggests a phishing or malware distribution attempt.

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=crash+bandicoot+pc+demo
    • http://xesiwu.dollargeneralpennylist.com/uploads/1/3/1/4/131406352/jejale_reputibub_narisikexafovin.pdf
    • http://files.sukujewelry.com/uploads/1/3/1/0/131069886/figatejid.pdf
    • https://cdn.shopify.com/s/files/1/0438/2890/4093/files/78335466429.pdf
    • https://cdn.shopify.com/s/files/1/0435/3923/4967/files/34384554995.pdf
    • https://cdn.shopify.com/s/files/1/0435/0260/0356/files/kexexaxokuwuxotumewe.pdf
    • https://cdn.shopify.com/s/files/1/0436/8374/1849/files/76047875637.pdf
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/7093488428.pdf
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/xupalukawevavevurir.pdf
    • https://cdn.shopify.com/s/files/1/0434/0088/8483/files/bavokanuvunereve.pdf
    • https://cdn.shopify.com/s/files/1/0430/7304/4634/files/varisegeb.pdf
    • https://cdn.shopify.com/s/files/1/0437/6612/0609/files/tipijizeguvurisumanakuna.pdf
    • https://cdn.shopify.com/s/files/1/0428/4855/1068/files/49578294664.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/how_to_auto_pictures_in_outlook.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_off00006015.bin
c01e57c05947e89eb4b0d5e9e6563b6d2f4a500d7c5d1e81c48f4a21d523b9ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6015 5328 bytes
font_01_sfnt_off000071f4.bin
9be9b44a4378f1e0236212ef89d8b8d1a7b3fcdea46ee7ecc4f3041f53dbd070		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F4 10372 bytes

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