Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd897c5b12d2cb9f…

MALICIOUS

PDF

58.2 KB Created: 2020-08-22 06:46:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50e29619a3f06ef5796791f287f778a7 SHA-1: 00fa00b697481298eb72a649624eee30c3aeb7a3 SHA-256: bd897c5b12d2cb9f4bec970bb874e0d82c96ec705b31c39c8518e678db949b83
120 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, with numerous embedded URLs. The primary malicious URL, 'https://ttraff.cc/pify?keyword=ohmeda+biliblanket+meter+ii+service+manual', is directly linked to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting a social engineering lure disguised as a service manual to entice users to click the malicious link.

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=ohmeda+biliblanket+meter+ii+service+manual
    • http://files.travelwithkara.com/uploads/1/3/0/8/130813413/073e453ca7a1611.pdf
    • https://cdn.shopify.com/s/files/1/0432/7863/1072/files/lorukipufiwelenozemo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7833/7187/files/80489811468.pdf
    • https://cdn.shopify.com/s/files/1/0435/1462/6202/files/kirby_clash_switch_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84860081798.pdf
    • https://cdn.shopify.com/s/files/1/0430/4430/7098/files/voxuterutevulifajimudexe.pdf
    • https://cdn.shopify.com/s/files/1/0435/9382/6463/files/papudawodesofu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/tewabim.pdf
    • https://cdn.shopify.com/s/files/1/0437/1592/0024/files/chocolate_factory_games_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/descargar_libro_contexto_social_de_la_profesion_uanl.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/nuvijoperuvazefopow.pdf
    • https://cdn.shopify.com/s/files/1/0434/5918/2745/files/26491878173.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_off00009702.bin
e56dc61fdc1f1ca0855dab6b7350d313636b10799a6c194c965e2ba0f0b896c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9702 5468 bytes
font_01_sfnt_off0000a96e.bin
f55a9a57072e41725462691d9c4edde1b8379e8b46033369bddfc7d76b7fe212		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA96E 15644 bytes

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