Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d76fb878ecea9c…

MALICIOUS

PDF

53.1 KB Created: 2020-08-18 23:37:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c20c22da10d950c9f4c60e1765fde2d6 SHA-1: b104aa90501c64d097453afaf7c9af128818e002 SHA-256: f7d76fb878ecea9c09012a57a50977828f261a7e7262e755dd253c9c520c5c84
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=protestant+reformed+or+catholic+eu4. The document body, though heavily obfuscated, contains references to this URL and other Shopify links, suggesting a phishing or scam attempt. No scripts were extracted, but the PDF structure and embedded links strongly indicate malicious intent.

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=protestant+reformed+or+catholic+eu4
    • http://files.wildmedicinetantra.com/uploads/1/3/1/3/131381066/zinisavigivekap-rupagaxedimepex-lurevanirasit.pdf
    • http://files.redrivergorgeguide.com/uploads/1/3/0/9/130968942/4581261.pdf
    • http://files.mimiartworks.com/uploads/1/3/1/3/131381640/jiximoz-dewelafi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/71901552258.pdf
    • https://cdn.shopify.com/s/files/1/0433/3902/2485/files/13867841937.pdf
    • https://cdn.shopify.com/s/files/1/0432/3164/1767/files/price_control_and_anti_profiteering_act_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4496/files/bank_book_format.pdf
    • https://cdn.shopify.com/s/files/1/0432/5326/8642/files/39418724794.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/mrityunjay_kadambari_file.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7349/files/prueba_de_antigeno_prostatico_especifico.pdf
    • https://cdn.shopify.com/s/files/1/0437/2201/4870/files/zugitipevamawijokox.pdf
    • https://cdn.shopify.com/s/files/1/0435/2914/2426/files/56422630514.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/what_is_a_colloquialism_example.pdf
    • https://cdn.shopify.com/s/files/1/0432/3131/4077/files/80361317290.pdf
    • https://cdn.shopify.com/s/files/1/0431/9887/3763/files/adj_clause_exercise.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_off000091dd.bin
89f6045c8832e79f0d03fa92e883e35da6077f663ce6c2df5dc9d800cecb4dcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91DD 5352 bytes
font_01_sfnt_off0000a3dc.bin
391b0c0e3adb3e711b0f191480932d205899ff48b7ab1762c5bb532e4d0f9c81		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3DC 10468 bytes

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