Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3d67aaa8a004780…

MALICIOUS

PDF

44.4 KB Created: 2020-08-24 08:07:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e25632bb962dc09afdaca5015be77ce SHA-1: 315a8dec620335d5823c112c16a5119c4239321a SHA-256: b3d67aaa8a0047806192f01cf5a1bf7f737627aa92bcc4de5ce1030eaea161d3
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for 'captain america wallpapers for android'. This URL points to a redirector service, which is a common tactic for delivering malicious payloads or leading users to phishing sites. The presence of a link farm further supports the malicious intent.

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.com/pify?keyword=captain+america+wallpapers++for+android
    • http://files.jackaharris.com/uploads/1/3/1/0/131070362/ganewija.pdf
    • http://jotisaxix.denverkoreanschool.org/uploads/1/3/0/7/130739553/2005014.pdf
    • http://files.riveroflifetoday.org/uploads/1/3/2/6/132681210/9528795.pdf
    • http://files.paradigmcollision.com/uploads/1/3/0/7/130738765/e77ffbda1660.pdf
    • https://cdn.shopify.com/s/files/1/0433/6313/9733/files/aha_cpr_guidelines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/46664846162.pdf
    • https://cdn.shopify.com/s/files/1/0432/2207/3506/files/liwatepivafebubugosijer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vejumilaro.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/jutid.pdf
    • https://cdn.shopify.com/s/files/1/0440/8049/6792/files/69455682145.pdf
    • https://cdn.shopify.com/s/files/1/0435/4677/1607/files/xorinatanufu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/9321809745.pdf
    • https://cdn.shopify.com/s/files/1/0462/2005/0586/files/34050762393.pdf
    • https://cdn.shopify.com/s/files/1/0431/8072/0294/files/moweperivunufozemowak.pdf
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/wudirofixoner.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kulabegidubonigupux.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_off00006f8e.bin
2d09520f1135aee0033c932873ffd5707a88f4d2f1f242b0fd22822a737bc14e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8E 5296 bytes
font_01_sfnt_off00008184.bin
31ae301a3ab7eab3b6e0310d35022690111a59d65d652ea728485f55549a7c7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8184 10116 bytes

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