Malicious PDF — malware analysis report

Static analysis result for SHA-256 c31b80515db7b02c…

MALICIOUS

PDF

54.1 KB Created: 2020-08-15 02:15:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fb54141309cca57ded0419fd24e22d0 SHA-1: f7dc015860d556190aaa4ddef5fef93fd97fe161 SHA-256: c31b80515db7b02cbad3a7d7088d6f9e7c4369cd912bf7e704df79a86b35a750
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.ru/pify?keyword=td+corrig%25C3%25A9+d%2527+atomistique+pdf, indicating a likely phishing or scam attempt. The presence of a link farm further supports this, suggesting an effort to distribute malicious content or traffic. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=td+corrig%25C3%25A9+d%2527+atomistique+pdf
    • http://rojuve.usgrandmasters.com/uploads/1/3/1/4/131408899/texomudoza-fugemiwo-zivojasuzukot.pdf
    • http://files.calvinmasculpts.com/uploads/1/3/2/7/132712206/lodezifogotofet-lajaziwakupivob-jeravenur.pdf
    • http://files.imperialgrp.com/uploads/1/3/1/6/131606072/degojefodemimug.pdf
    • http://sokijolej.abatelakechapter.com/uploads/1/3/2/6/132695569/2b948aaf781876.pdf
    • http://files.mariannezarzana.com/uploads/1/3/1/4/131482821/b2aeea9f7.pdf
    • https://cdn.shopify.com/s/files/1/0430/8906/8185/files/79892718500.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51439980706.pdf
    • https://cdn.shopify.com/s/files/1/0438/5921/4501/files/sword_art_online_progressive.pdf
    • https://cdn.shopify.com/s/files/1/0447/1242/7674/files/calendario_laboral_2020_ccoo_madrid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65431134640.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.pdf
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/19725149350.pdf
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/45140784684.pdf
    • https://cdn.shopify.com/s/files/1/0429/6133/8531/files/characteristics_of_a_charismatic_leader.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_off00008f6e.bin
f86c94a95510fb76044acf908795459bd899dc7c758caa57fe420272332e0797		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6E 5696 bytes
font_01_sfnt_off0000a26f.bin
d70793064d9eb0bebde7f41b74a9042fcb45668b66eea35f3fbe51a39f803d9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA26F 12404 bytes

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