Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc08b88edb3f690…

MALICIOUS

PDF

45.3 KB Created: 2020-08-18 20:19:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63574792ab1126976c7039c8e7b29144 SHA-1: 0d42291ee3783a83dc165941c9468f9505d5e7cd SHA-256: 3cc08b88edb3f6908376beb37e88a6d68a90c0fd7a4795c5607f8a9b63555aae
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs, a technique often used for SEO manipulation or to obscure malicious destinations. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is part of a link farm. The document body, though heavily obfuscated, contains the same lure text as the malicious URL, suggesting the intent is to trick the user into clicking the link. No scripts were extracted from this sample.

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=holy+paladin+leveling+guide+classic
    • http://files.309punkmuseum.org/uploads/1/3/1/3/131380847/796545938b0966f.pdf
    • http://files.sweetearthjewelry.com/uploads/1/3/1/3/131380052/xokumiwunin.pdf
    • http://files.aaugymnasticsnationals.com/uploads/1/3/0/8/130813558/zezira.pdf
    • https://cdn.shopify.com/s/files/1/0431/2206/5557/files/baklol_video_part_7.pdf
    • https://cdn.shopify.com/s/files/1/0437/6444/9437/files/6825627676.pdf
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/minecraft_tower_ideas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mozesuseb.pdf
    • https://cdn.shopify.com/s/files/1/0438/1474/8322/files/tang_soo_do_forms.pdf
    • https://cdn.shopify.com/s/files/1/0428/1945/3095/files/tinowebas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0304/3230/files/57767087194.pdf
    • https://cdn.shopify.com/s/files/1/0437/7998/1470/files/wiwunad.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_off000072ef.bin
74477e095b062c877d74143b48494f81242aead61a62aacfb733234038d00b19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72EF 5268 bytes
font_01_sfnt_off000084f5.bin
f874892973eef8f9b934e1f8405c74ea0c5d7e2fda902893520a657d16288999		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84F5 10420 bytes

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