Malicious PDF — malware analysis report

Static analysis result for SHA-256 912fe5eff8801870…

MALICIOUS

PDF

40.5 KB Created: 2020-08-06 01:34:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 405998b9c6b0343db881b9b2e62e1504 SHA-1: f46d53ebec6cd5e411300882305c550fb23c4670 SHA-256: 912fe5eff8801870283ee013ceb38fadc05018fa3d657b5a0552ae263bd643dd
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=evaluation+orthographe+cm1+pdf'. It also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to drive users to this malicious site. No scripts were extracted, and the PDF structure itself is the vector for the attack.

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=evaluation+orthographe+cm1+pdf
    • http://files.customdartshirts.com/uploads/1/3/1/4/131407051/kuniludevuwobub.pdf
    • http://files.brandiecormier.com/uploads/1/3/1/3/131398091/risipelex.pdf
    • http://files.specialtouchesgiftsforthehome.com/uploads/1/3/2/6/132681602/fumad_tilazenu.pdf
    • http://files.alzheimersocclub.com/uploads/1/3/1/3/131379253/nedafekokedut.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/45221907487.pdf
    • https://cdn.shopify.com/s/files/1/0440/8783/6822/files/lupepefuzolofugola.pdf
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/55986339122.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nisexabidubukov.pdf
    • https://cdn.shopify.com/s/files/1/0438/2933/0077/files/vedoxafufewevagokoseramuv.pdf
    • https://cdn.shopify.com/s/files/1/0448/0296/5665/files/biology_class_12_chapter_3.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1496/files/kikarigefijuravosoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/94708781889.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/furituromuvusimuzuwibis.pdf
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/23853234959.pdf
    • https://cdn.shopify.com/s/files/1/0435/6364/7137/files/bunaje.pdf
    • https://cdn.shopify.com/s/files/1/0430/0842/6147/files/476630084.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_off00006032.bin
d4a06cb89c6537d05556576f6c56ab2b551e1801ce2c89c17115d043e1fd36cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6032 5460 bytes
font_01_sfnt_off000072b2.bin
f0c65efd0b13fc29bd7ecc77c6ff6def1825305ec8857ec4a83cd41defa93cf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B2 10028 bytes

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