Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2b4e06ef6b4f172…

MALICIOUS

PDF

45.0 KB Created: 2020-08-05 09:07:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42c39e2efc60aa1066ce4d0df24ddf4d SHA-1: d6c2bd0b7d39a470448398fe36816b70acdb4f91 SHA-256: f2b4e06ef6b4f1721d87695192821dfc91a71fdd64ea1ff32a954885e5af97c0
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL pointing to a redirector. This suggests the primary purpose is to redirect users to malicious content, likely for phishing or malware distribution.

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=south+africa+constitution+pdf
    • http://files.ctslouisstlaurent.com/uploads/1/3/1/4/131438604/9660862.pdf
    • http://files.taniamansfield.com/uploads/1/3/1/8/131871488/9260629.pdf
    • http://files.growyourteaching.com/uploads/1/3/0/9/130969404/4003942.pdf
    • http://files.buynorthernlightswines.com/uploads/1/3/1/3/131378942/16f5fc462.pdf
    • http://files.irunursing.org/uploads/1/3/1/3/131380005/fff72a449f58059.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekugoxozeritazol.pdf
    • https://cdn.shopify.com/s/files/1/0437/6851/2669/files/96325342561.pdf
    • https://cdn.shopify.com/s/files/1/0431/7442/8827/files/ronuzefivutof.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/zatixevape.pdf
    • https://cdn.shopify.com/s/files/1/0438/5007/2224/files/5571991337.pdf
    • https://cdn.shopify.com/s/files/1/0431/3517/2770/files/85393990196.pdf
    • https://cdn.shopify.com/s/files/1/0441/2869/8520/files/ceruleum_field_ffxiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/6668/6629/files/38349959911.pdf
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/53480842752.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/xiruzatovuw.pdf
    • https://cdn.shopify.com/s/files/1/0438/0491/7917/files/xbox_one_ipv6.pdf
    • https://cdn.shopify.com/s/files/1/0433/7713/1683/files/dibujos_de_calaveras_para_colorear.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_off000072ad.bin
452d665d1f791c035b1e2f340acc46e57967ce47f58d43f1df4b4cea39a4894f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72AD 5316 bytes
font_01_sfnt_off000084bc.bin
b4381cfd63aeb45b1b46ac757ee42fee20c2ca36e96f520ec692465596dc144f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84BC 10048 bytes

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