Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f47aabd7dd0664a…

MALICIOUS

PDF

38.0 KB Created: 2020-08-18 21:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a3f05f9c12aef7a229fd891bc1cbe2a SHA-1: b9fef76042f8afad700945e6188512cd4c6b4fd0 SHA-256: 9f47aabd7dd0664a66901cc9dcf198ffc83caf3aa5950c6a5359e25ca0e13916
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it is a malicious redirector, linking to `https://ttraff.ru/pify?keyword=premium+channels+app+android`. Additionally, it exhibits characteristics of a PDF link farm, with multiple embedded links, including one to `https://cdn.shopify.com/s/files/1/0447/9765/7248/files/betazok.pdf`. The document body, though partially corrupted, contains text related to "Premium channels app android" and the redirector URL, suggesting a social engineering lure.

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.ru/pify?keyword=premium+channels+app+android
    • http://files.penhurstacademy.co.za/uploads/1/3/0/9/130969036/bepibizepepedu.pdf
    • https://cdn.shopify.com/s/files/1/0447/9765/7248/files/betazok.pdf
    • https://cdn.shopify.com/s/files/1/0435/4097/1674/files/jofunav.pdf
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/antardesi_patra.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78683638278.pdf
    • https://cdn.shopify.com/s/files/1/0428/8688/9639/files/xozivewaziziwapup.pdf
    • https://cdn.shopify.com/s/files/1/0433/8181/7505/files/mass_rmv_drivers_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/1806/6842/files/43664523137.pdf
    • https://cdn.shopify.com/s/files/1/0434/0088/8469/files/tadefidaduluzutagaw.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_off000057e2.bin
b0bfef3324c9bfe4c71eefcda1790098284d814d54980b836d8735fdf0303d17
pdf-font-stream PDF embedded font (sfnt) at offset 0x57E2 5312 bytes
font_01_sfnt_off000069c1.bin
32b97763bd3a97bbe2c500118c0ae2f86e357b8e70272c20be33ebb9efd87a97
pdf-font-stream PDF embedded font (sfnt) at offset 0x69C1 9984 bytes