Malicious PDF — malware analysis report

Static analysis result for SHA-256 306e6a986fd87db2…

MALICIOUS

PDF

56.1 KB Created: 2020-08-21 19:20:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a44349a9d5024876e4154ab642390d64 SHA-1: 7da880fff86541a87ba7ea951de3694501f43750 SHA-256: 306e6a986fd87db247b15c6b85b35e66029ea2189a18c9447a510715a79ac3c0
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a high number of embedded links, many of which point to a redirector service (ttraff.cc). The document body, though heavily obfuscated, contains the same URL, suggesting a lure to download or visit a malicious site. The presence of a 'download button' heuristic further supports this. The file is likely a downloader or part of a phishing campaign.

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.cc/pify?keyword=birbal+stories+in+malayalam+pdf
    • http://files.ultimatefrisbeenow.com/uploads/1/3/1/4/131482926/2791022.pdf
    • http://lovijira.ghilliedhumusic.com/uploads/1/3/1/0/131070152/8714786.pdf
    • http://jotifajam.ramsclubswimming.org/uploads/1/3/1/3/131379808/daxipurefezes-daxisovus-pomujuduj.pdf
    • http://files.yellowpeardesigns.com/uploads/1/3/1/4/131438245/zojopeteruvugiv-tepijewoki-pufer-jesal.pdf
    • http://xerepev.jvgardens.com/uploads/1/3/1/4/131454269/973376.pdf
    • http://shoxet.com/1a0h5y
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/72473579829.pdf
    • https://cdn.shopify.com/s/files/1/0432/5320/3102/files/90978007722.pdf
    • https://cdn.shopify.com/s/files/1/0428/6640/9639/files/typhoid_fever_blood_test_report_sample.pdf
    • https://cdn.shopify.com/s/files/1/0445/2987/7151/files/comment_fusionner_plusieurs_en_un_seul_avec_creator.pdf
    • https://cdn.shopify.com/s/files/1/0429/6353/3977/files/bioetica_concepto.pdf
    • https://cdn.shopify.com/s/files/1/0435/6187/7665/files/wave_equation_question.pdf
    • https://cdn.shopify.com/s/files/1/0432/0333/0208/files/mabawudurilodidubod.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdf
    • https://cdn.shopify.com/s/files/1/0434/3532/7653/files/modaxobiposazijawi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nimapudusakodinufuzexive.pdf
    • https://cdn.shopify.com/s/files/1/0454/6491/2024/files/real_chess_game_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/7053/7374/files/wetowuremujixejajowigofux.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007387.bin
4cf6072cf2202da5be7b19663ad2727bb3a66ae5bc2161e5283b0a767b465542		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7387 5480 bytes
font_01_sfnt_off00008602.bin
cacf1052928072b4e0f660ea7558285a5f2ad1e59613baee9e9f6b6c1bab1c16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8602 8532 bytes
font_02_sfnt_off0000a31e.bin
d4628df4f25626f142e9be035af99c00619db45f5a0524b2f316320a5fc53f3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA31E 15424 bytes

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