Malicious PDF — malware analysis report

Static analysis result for SHA-256 34a4f2c91291b997…

MALICIOUS

PDF

34.3 KB Created: 2020-08-23 05:07:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68274dbed3762456736bd87ead4d4dc2 SHA-1: 3d029dc65accad41fe565245555e70249e37595f SHA-256: 34a4f2c91291b997b16e88532a830d09da7a5a1a47507541d0e8140a39a6b3aa
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to SEO poison, with one prominent link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Wild at heart facilitator's guide pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous benign-looking PDF links on Shopify domains is a common tactic to build trust and mask the malicious redirector.

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=wild+at+heart+facilitator%2527+s+guide+pdf
    • http://files.yunialores.com/uploads/1/3/1/4/131437655/9145506.pdf
    • http://files.theyogaden.net/uploads/1/3/0/7/130775400/gogan_nivofipav_jenuraxik.pdf
    • https://cdn.shopify.com/s/files/1/0437/0785/9096/files/93677357451.pdf
    • https://cdn.shopify.com/s/files/1/0429/6962/8828/files/33830491211.pdf
    • https://cdn.shopify.com/s/files/1/0461/4396/3299/files/title_video_background_free.pdf
    • https://cdn.shopify.com/s/files/1/0446/8817/9353/files/madagujimifod.pdf
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/jitotavenegogut.pdf
    • https://cdn.shopify.com/s/files/1/0433/3499/2025/files/alexander_pope_eloisa_to_abelard.pdf
    • https://cdn.shopify.com/s/files/1/0450/7166/3256/files/aashto_2020_standard_specifications.pdf
    • https://cdn.shopify.com/s/files/1/0447/9467/5357/files/ejercicios_de_caida_libre_fisica.pdf
    • https://cdn.shopify.com/s/files/1/0441/2624/0920/files/11077944918.pdf
    • https://cdn.shopify.com/s/files/1/0432/7319/1587/files/reguzeli.pdf
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/civil_engineering_colleges_in_pune.pdf
    • https://cdn.shopify.com/s/files/1/0447/9490/4725/files/browser_app_for_android_tv.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_off000047d6.bin
d510f5d861a5aa9e139f9cef9bd47af33b02a055a60501f178c16fba0d2dde84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47D6 5464 bytes
font_01_sfnt_off00005a79.bin
3feac3a29a2d89a95e73e4116290caf87356584a855a479880561a2317aeacc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A79 9872 bytes

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