Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d20a5e317eaf994…

MALICIOUS

PDF

47.6 KB Created: 2020-07-28 22:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a57b1908a728e155a1b5096a5dd53909 SHA-1: a3a6f5715820fe2e9f639c65a44b1b3e9bff5592 SHA-256: 2d20a5e317eaf9945362e1dd4aa5a8d99be7ea1d633a008093925d78837e68cf
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=lean+muscle+gain+workout+routine+pdf'. Additionally, it features a PDF link farm heuristic, indicating a large number of outbound links, with the first being 'https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34993807018.pdf'. The document body, though heavily obfuscated, suggests a lure related to fitness routines. The combination of these factors strongly suggests a phishing or scam attempt.

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.cc/pify?keyword=lean+muscle+gain+workout+routine+pdf
    • http://files.fieldhockeygoalkeeping101.com/uploads/1/3/0/7/130740191/8b9f3dded954e1f.pdf
    • http://files.missgoob.com/uploads/1/3/0/9/130969915/947fce823d.pdf
    • http://files.centerforpersonalwellness.com/uploads/1/3/0/8/130874110/6121014.pdf
    • http://files.vintagemarkets.net/uploads/1/3/1/4/131437878/rapixigibexege_gumunax.pdf
    • http://files.vintagemarkets.net/u
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34993807018.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0769/files/kunapurikolamep.pdf
    • https://cdn.shopify.com/s/files/1/0438/5685/5190/files/83360138816.pdf
    • https://cdn.shopify.com/s/files/1/0439/2747/0235/files/gaken.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/vozuxegelojimidevikadeve.pdf
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/38358989406.pdf
    • https://cdn.shopify.com/s/files/1/0439/1269/1867/files/kibepixeduj.pdf
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/19597720439.pdf
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/32371984948.pdf
    • https://cdn.shopify.com/s/files/1/0437/7732/7265/files/nusedusiribexuwi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2732/files/63998493097.pdf
    • https://cdn.shopify.com/s/files/1/0429/6641/7571/files/takokanasilavetevifa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7478/0312/files/22268472470.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_off00007b9c.bin
9d56394f46d8a2117f52b88f6254da24179482a2f0191b1f667057a18090df95
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9C 5452 bytes
font_01_sfnt_off00008e24.bin
bf0b51d3c6d740c026df1ee5bd4de6e76d99843b0119bb97f9c4b79250b90a9b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E24 10280 bytes