Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0787828092ea34a…

MALICIOUS

PDF

38.9 KB Created: 2020-08-20 02:31:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9810f1d354c9f8e7a413a58e5f81794c SHA-1: 763a995ff0e87ee067e1ae004518ae79c3c0cbac SHA-256: a0787828092ea34a29a540b456106050dd4fca8b408eb22049d626ffddb3c72a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to a 'Casio g shock ga 110 1ber manual' and the malicious URL. This suggests a phishing lure, likely aiming to redirect users to a site that hosts further malicious content or exploits. The presence of numerous other links, many pointing to Shopify, indicates a link farm strategy to improve SEO for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=casio+g+shock+ga+110+1ber+manual
    • http://files.gourmetw.com/uploads/1/3/2/7/132711966/kafezapeloxona.pdf
    • http://files.sigma-lambda-gamma.com/uploads/1/3/0/7/130775380/780660e0113f.pdf
    • http://files.sacredsecretskincare.org/uploads/1/3/1/4/131412858/2c945c6275497aa.pdf
    • http://files.laurasprague.com/uploads/1/3/1/8/131857199/2caa75f99d.pdf
    • https://cdn.shopify.com/s/files/1/0434/9794/7288/files/24716055451.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/46028443230.pdf
    • https://cdn.shopify.com/s/files/1/0430/7153/7301/files/vekibevow.pdf
    • https://cdn.shopify.com/s/files/1/0430/8143/3242/files/pasovisinafoliginipi.pdf
    • https://cdn.shopify.com/s/files/1/0427/7754/2823/files/zetegigamaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/8667/5108/files/3000w_power_amplifier_circuit_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/la_vie_en_rose_accordion_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/4474/1024/files/kokisakurulevelazoke.pdf
    • https://cdn.shopify.com/s/files/1/0439/2160/4763/files/vesavuvakanajosulivemim.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/41961769489.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_off00004fb1.bin
b31d5789b47d07afe2aace43a5444f5a61f2de43ce3969b7fa2e6f38d3a6f98f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FB1 5516 bytes
font_01_sfnt_off0000624d.bin
b0eb25a1f512bf8bfabf83d2382f0d98dad738452447ef3a2d6507450a00921d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x624D 14384 bytes

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