Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d844ab04793e7b7…

MALICIOUS

PDF

42.6 KB Created: 2020-08-23 09:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3f2726cb9d50ae336c11161f29d2a37 SHA-1: c17c09a61be1da8e9a7d306038c9b98a47ef01a4 SHA-256: 3d844ab04793e7b7366b248e61c3360753c9fa0c694cb9383c672f458f3f3c1b
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the primary malicious URL. The presence of numerous external PDF links, many hosted on cdn.shopify.com, suggests a link farm designed to obscure the ultimate destination and potentially evade detection.

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.ru/pify?keyword=reforma+luterana+calvinista+e+anglicana+resumo
    • http://files.ncbbq4u.com/uploads/1/3/0/7/130775853/7460552.pdf
    • http://files.thesecretlifeofmountainlions.org/uploads/1/3/0/7/130739828/surex.pdf
    • http://jiroxifak.lexingtonservicesolutions.com/uploads/1/3/2/7/132710567/fojaxub.pdf
    • https://cdn.shopify.com/s/files/1/0432/9901/2763/files/50456777049.pdf
    • https://cdn.shopify.com/s/files/1/0431/0863/0681/files/fate_game_serial.pdf
    • https://cdn.shopify.com/s/files/1/0435/2435/8308/files/bonevanili.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/28367405373.pdf
    • https://cdn.shopify.com/s/files/1/0435/2511/1972/files/82687463898.pdf
    • https://cdn.shopify.com/s/files/1/0431/5948/6626/files/titemumuzimuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6503/files/zibawimuvumejisasi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39720928980.pdf
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/22679669280.pdf
    • https://cdn.shopify.com/s/files/1/0435/9018/9215/files/35691045080.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_off00006924.bin
7f2c8508e0c134420ac4cf9343b3350ed073a57206ddb34fce58ab7f5275514c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6924 5268 bytes
font_01_sfnt_off00007b02.bin
65f239367487819d9882f4bbb86843e96e7f03d717e038f7d6961377c6237dc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B02 9952 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.