Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d94d018c22ad37…

MALICIOUS

PDF

45.1 KB Created: 2020-08-11 14:39:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b61da527c89abf7faa294c279dc508d SHA-1: ae11733b89d65e7cfb654158ebb2b2d4479a293e SHA-256: c5d94d018c22ad37b2f471a105b617a683f33d544e9aeb96cb88b083c6eb74bc
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The embedded URL points to 'ttraff.com', which is known malicious infrastructure. The document body, though heavily obfuscated, contains this URL and other links, suggesting a lure to external content. The presence of numerous external links, many hosted on Shopify, indicates a link farm strategy, likely for SEO poisoning or to obscure the final malicious destination.

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=arap+bahar%25C4%25B1+ve+t%25C3%25BCrkiye+pdf
    • http://vagip.collaborativeteachersinstitute.com/uploads/1/3/1/3/131383314/ladogexegub_pevak_fezifudi_rivese.pdf
    • http://files.trutalentproductions.com/uploads/1/3/1/6/131607310/bc7f48a2715.pdf
    • http://files.portasuptsblog.org/uploads/1/3/0/9/130968950/vexuj.pdf
    • http://files.jennifercoffey.net/uploads/1/3/1/3/131380687/c0efd208.pdf
    • http://ladolovum.mississauganation.com/uploads/1/3/1/6/131606490/2791747.pdf
    • https://cdn.shopify.com/s/files/1/0431/0558/3266/files/63106896263.pdf
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/learning_management_system.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7211/files/jafulerira.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/jilosabolefaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/8640/4000/files/peniruwuzopezufe.pdf
    • https://cdn.shopify.com/s/files/1/0447/3811/7781/files/effortless_english_full_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojedisubeweful.pdf
    • https://cdn.shopify.com/s/files/1/0428/7961/5142/files/navpers_1080_3.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rerisorajomowuba.pdf
    • https://cdn.shopify.com/s/files/1/0431/7039/8372/files/91415270508.pdf
    • https://cdn.shopify.com/s/files/1/0427/5005/0460/files/fapepuku.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_off0000634f.bin
20d024c84ca6e986e77ebce7936a1e8bbfde5c9dd7f2cd9d55b1371c1bc8f61a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x634F 5428 bytes
font_01_sfnt_off00007595.bin
7323cf712959a0a40cf3526e35e5b8915a560d27362f9db7065407b67c6ba756		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7595 16432 bytes

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