Malicious PDF — malware analysis report

Static analysis result for SHA-256 492d4e01c710ea03…

MALICIOUS

PDF

40.9 KB Created: 2020-08-26 09:11:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b654d8203863c48b8ff4e01f7f83399e SHA-1: 6e3e7776ed5d50ce93ef93dabe1bbd9a97d1bf6d SHA-256: 492d4e01c710ea032111d5fa228010b75a3339e2786aa680332547a6b7934281
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). The document body, though heavily obfuscated, contains the malicious URL. This suggests a phishing or scam attempt using a link farm to obscure the final malicious destination.

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=tasmanian+tiger+sightings+2018
    • http://files.bellechurchofchrist.com/uploads/1/3/1/0/131069824/7043037.pdf
    • http://files.homilytools.org/uploads/1/3/0/8/130813317/6269620.pdf
    • https://cdn.shopify.com/s/files/1/0438/7281/3211/files/automatic_control_system_book.pdf
    • https://cdn.shopify.com/s/files/1/0450/3057/2190/files/rejuva.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/shaolin_18_lohan_hands.pdf
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/jisuwuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/9245/1232/files/kerarazamumijagofuxiniso.pdf
    • https://cdn.shopify.com/s/files/1/0435/1941/0335/files/trigonometry_in_astronomy.pdf
    • https://cdn.shopify.com/s/files/1/0439/1596/8680/files/calfresh_application_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0437/1664/0917/files/fosogubesurufewuduwekewu.pdf
    • https://cdn.shopify.com/s/files/1/0435/0679/4656/files/rezadivebikovefefu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5217/9364/files/janerefitujulonagavixim.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/nerukobufazubaruvurasurax.pdf
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/pegexelakeguxafi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0813/files/824665516.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_off000062e1.bin
e905fdbb081153f82b2cba97f755745a7a96282177a08805dec2545f10899a20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62E1 5536 bytes
font_01_sfnt_off00007585.bin
d0f2c9add7acb6eae9b3c26fb360472f8ade31ef253dcf172d7a4d39a2646227		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7585 9712 bytes

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