Malicious PDF — malware analysis report

Static analysis result for SHA-256 aac93434c6197c11…

MALICIOUS

PDF

39.3 KB Created: 2020-08-20 01:41:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d2967baa006f58e336abaf78f3961f1 SHA-1: 7592ca879013c43925075d498e204a332656bd13 SHA-256: aac93434c6197c1131d280e054764df5950fcfc9092363b85a537dc27c3ea467
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, includes text referencing a 'Symantec dlp 12.5 administration guide' and the malicious URL 'https://ttraff.cc/pify?keyword=symantec+dlp+12.+5+administration+guide'. This suggests a social engineering tactic to trick users into clicking the link, which then redirects to potentially harmful content. The presence of a link farm heuristic further supports the malicious intent of directing users to external sites.

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=symantec+dlp+12.+5+administration+guide
    • http://mupaboxas.reynoldseducationassociation.org/uploads/1/3/1/6/131607095/fuxulepewasebefomiwe.pdf
    • http://files.river-city-wings.org/uploads/1/3/1/8/131856907/50048ec9e.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/31540491572.pdf
    • https://cdn.shopify.com/s/files/1/0434/5534/8888/files/4398236402.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/dekezuganovol.pdf
    • https://cdn.shopify.com/s/files/1/0435/7206/8520/files/shoulder_dystocia_management.pdf
    • https://cdn.shopify.com/s/files/1/0431/6951/3632/files/zikotewaxaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/begefaborexom.pdf
    • https://cdn.shopify.com/s/files/1/0429/6641/7571/files/13762459035.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_off000052b1.bin
70a0bb9bd36fd3ced77bf87bd600a7554fb15c3d3ad7406a80cb74e96a7ccc28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52B1 5940 bytes
font_01_sfnt_off000066d2.bin
d7e8f94efca15f7e43987e2888227265d7978dfa81e7f906c05bcb12f8cb60ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D2 13488 bytes

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