Malicious PDF — malware analysis report

Static analysis result for SHA-256 b172f16e7bb9a948…

MALICIOUS

PDF

44.3 KB Created: 2020-08-14 04:57:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50216d623aaa17939c826eae10e2f12d SHA-1: f297fce48044445f3d574ebaa885f6fef89cfed0 SHA-256: b172f16e7bb9a948203b54660d1f87bfd961c9670058d8e18bb3f94adf55b3cc
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. It also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains hosting PDF files. The document body contains text related to 'Investigacion en psicologia educativa pdf' and includes the malicious URL, suggesting a lure to disguise malicious redirection as an academic resource.

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=investigacion+en+psicologia+educativa+pdf
    • http://files.stbrendansccm.org/uploads/1/3/1/3/131398504/dosozuxururuv.pdf
    • http://files.ruffdiamonds.net/uploads/1/3/0/7/130776504/2dfaa1ec871.pdf
    • http://files.b-cozyhomedecor.com/uploads/1/3/0/9/130969151/caacd203adb3920.pdf
    • https://cdn.shopify.com/s/files/1/0431/9713/7056/files/45407601307.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/kiwofukogipanur.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/83716886156.pdf
    • https://cdn.shopify.com/s/files/1/0428/9226/3583/files/dilatigazezoxuxugewotip.pdf
    • https://cdn.shopify.com/s/files/1/0431/9507/2674/files/reduce_file_size_adobe_acrobat_pro_xi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/luvutalanopijomakel.pdf
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/bomeba.pdf
    • https://cdn.shopify.com/s/files/1/0430/8949/4177/files/79707907752.pdf
    • https://cdn.shopify.com/s/files/1/0432/5444/8286/files/86478789184.pdf
    • https://cdn.shopify.com/s/files/1/0433/8024/4643/files/jukukaferur.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_off00006c4d.bin
315361912986b84abd3e760b930be13eb31785a904abfd1300ba8c0298f3161b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4D 5224 bytes
font_01_sfnt_off00007e29.bin
6e4276c5e7833df713c2e14f9f4563baa1584f5991c1c4507dc6220b8ca483de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E29 11092 bytes

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