Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6017943a93c68e…

MALICIOUS

PDF

64.0 KB Created: 2020-08-05 16:30:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0413747910d203454448af22cc4c98aa SHA-1: 8c83b80097acba97ff18168dcb07ec7f843ced30 SHA-256: ca6017943a93c68e779a20fb44a5f5a8779fdb435ac87afcff06b2b27db0eb54
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'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. The ML classifier strongly supports the malicious nature of this PDF.

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=theorie+des+besoins+de+maslow+pdf
    • http://files.dibiasedimillo.com/uploads/1/3/0/7/130738894/d0085e.pdf
    • http://files.apharreld.com/uploads/1/3/1/3/131384127/tatore-tefimazeju-xikepovepuz.pdf
    • http://files.lakeworthanimalclinic.net/uploads/1/3/1/3/131397940/2829451.pdf
    • http://files.seasonalshowers.com/uploads/1/3/2/6/132682615/jupizibud-wirunix.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/9094425705.pdf
    • https://cdn.shopify.com/s/files/1/0432/3062/5947/files/49908406256.pdf
    • https://cdn.shopify.com/s/files/1/0434/6127/9896/files/bewofafukodorovepagajo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/vojemug.pdf
    • https://cdn.shopify.com/s/files/1/0435/3723/6119/files/ielts_academic_writing_sample_paper.pdf
    • https://cdn.shopify.com/s/files/1/0429/5337/5897/files/farapur.pdf
    • https://cdn.shopify.com/s/files/1/0429/2483/4975/files/pedoxujemiziduradenafagut.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/jubewejazulifazap.pdf
    • https://cdn.shopify.com/s/files/1/0429/8869/9802/files/how_to_open._wps_files.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/26024010956.pdf
    • https://cdn.shopify.com/s/files/1/0433/2745/5400/files/zufuza.pdf
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/65937309353.pdf
    • https://cdn.shopify.com/s/files/1/0447/1917/7882/files/amazing_grace_jazz_chords.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_off0000b818.bin
df715dacefbf3b6c6ac240ff8ede836a4590f635b8b6df4f7fe85d68c2b505ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB818 5460 bytes
font_01_sfnt_off0000ca88.bin
e5171373a5a840aac4d2ea6f3c9bc2cd83a5f870e11821a06223f6837c596d19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA88 12296 bytes

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