Malicious PDF — malware analysis report

Static analysis result for SHA-256 834d833cb13e51c4…

MALICIOUS

PDF

73.8 KB Created: 2020-08-29 08:13:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7005c876adb3a9dc5b6ff4f462113f50 SHA-1: 2fd9a6e496af1e2c10d89c30b1f81e0c602b0e93 SHA-256: 834d833cb13e51c416b9595f7994e09568abcf4b9de28255ff3723af161e2182
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a 'Destiny 2 font' download. This link points to ttraff.com, which is known for malicious redirection. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, likely to manipulate search engine results or distribute further malicious content. No scripts were extracted, but the presence of a malicious redirector and the link farm strongly suggest a phishing or malware distribution attempt.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=destiny+2+font
    • https://static.usrfiles.com/ugd/b8c837_3b6e3b6021034155861f02ebd27a7b7e.pdf
    • https://static.usrfiles.com/ugd/b8c837_f21874f4e02c488e9fd7f7abb3329ddd.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d9c3d767978423cb507573b0db2f16b.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0104/files/56061599231.pdf
    • https://cdn.shopify.com/s/files/1/0428/8203/9964/files/64545812668.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5675/files/73275839665.pdf
    • https://cdn.shopify.com/s/files/1/0435/6141/8913/files/38214369392.pdf
    • https://cdn.shopify.com/s/files/1/0434/4017/7314/files/wow_classic_bag_vendor.pdf
    • https://cdn.shopify.com/s/files/1/0433/2532/5465/files/jiwasagilasodovanotewezar.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/xatipozudipesubibuso.pdf
    • https://cdn.shopify.com/s/files/1/0432/3701/5719/files/99592999398.pdf
    • https://cdn.shopify.com/s/files/1/0428/3141/3404/files/tisikumali.pdf
    • https://cdn.shopify.com/s/files/1/0448/1315/6514/files/british_journal_of_sociology_of_education.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060af.bin
87d3e5c20139b2e04a1d0f7aee1a51ab9d40a913d3139f9ab00782fce84fbff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60AF 4444 bytes
font_01_sfnt_off00006fe8.bin
ee31a93198885fc7db6a0623cf4035ef95c524c16232d8a7595174c3a9e9ce8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE8 23684 bytes
font_02_sfnt_off000096f2.bin
e0ad6ef6db0e4b7a1c0443f4acd8017ed40682061f1d1209beddc7a65719cadb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96F2 13752 bytes
font_03_sfnt_off0000c649.bin
784757d96f828e94bc110437b489fbfc490eed2c08f41defebe18624108405a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC649 10392 bytes
font_04_sfnt_off0000e9dd.bin
c7a9484f4a035b436e72ec20308ed39dd7178b3ed899699caa443844908ffbbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DD 13956 bytes
font_05_sfnt_off00010b59.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B59 4324 bytes

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