Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3248ac0a6315d5a…

MALICIOUS

PDF

39.7 KB Created: 2020-08-20 18:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3420c9763fbb6c4e6ba2d600adfa0c0 SHA-1: 626521dec6231a93ac5c35d8b079d027b4c54f57 SHA-256: c3248ac0a6315d5a18865b76fe318fee078e2bcb648d09deb8f09050f2006542
158 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded JavaScript and a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=abs+strengthening+exercises+pdf'. This indicates the document is designed to redirect users to a potentially harmful site. The PDF also contains a large number of external PDF links, many hosted on Shopify, which is flagged as a link farm. While the document body is heavily obfuscated, the presence of the malicious redirector and embedded JS strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=abs+strengthening+exercises+pdf
    • http://files.rjensalada.com/uploads/1/3/0/9/130969936/gowexozodogifa-nodorujarajiz-bogexeju-kijak.pdf
    • https://cdn.shopify.com/s/files/1/0434/4093/0968/files/54940459489.pdf
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/multivariate_gaussian_distribution.pdf
    • https://cdn.shopify.com/s/files/1/0432/6899/7286/files/biblia_catolica_para_nios_ilustrada.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/nerukobufazubaruvurasurax.pdf
    • https://cdn.shopify.com/s/files/1/0432/1994/3579/files/bridge_over_troubled_water_guitar_tab.pdf
    • https://cdn.shopify.com/s/files/1/0435/2881/4760/files/93159351077.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/30976657094.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/austere_medicine.pdf
    • https://cdn.shopify.com/s/files/1/0432/6853/8521/files/p90x_workout_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/8669/9925/files/categorias_gramaticales_ejercicios.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_off00005cff.bin
c99a731ce1fa1a04594aede0f205cc77ff67aaf31c96169a3ea680afd9006911		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFF 5372 bytes
font_01_sfnt_off00006f37.bin
37b3c97ef532213031b92f3c64e91830872fb69e18ac1c3a64241de218ebc6ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F37 10288 bytes

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