Malicious PDF — malware analysis report

Static analysis result for SHA-256 761fdf4ab72ef048…

MALICIOUS

PDF

48.0 KB Created: 2020-08-31 08:19:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b02545530bda027f00e504088afb84d SHA-1: ffa80db06d69ddfc742f5090b279235ec7c07a71 SHA-256: 761fdf4ab72ef04851f35f34c755d01bd1363721cd867b2d05c0fe0dd09db9f3
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to a known malicious redirector. Additionally, PDF_SEO_LINK_FARM indicates a mass external PDF link farm. The document body contains the URL https://ttraff.ru/wix?keyword=inna+set+dungeon+guide, which is the primary IOC. The file's purpose appears to be directing users to malicious infrastructure through a link farm, likely for phishing or malware distribution.

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/wix?keyword=inna+set+dungeon+guide
    • https://cdn.shopify.com/s/files/1/0428/9105/1164/files/47690444813.pdf
    • https://cdn.shopify.com/s/files/1/0431/9114/0509/files/risumifavazax.pdf
    • https://cdn.shopify.com/s/files/1/0437/5874/7800/files/heroclix_dial_maker.pdf
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/best_reader_app_for_windows.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/gabopadetebonumak.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/aneurisma_del_cayado_aortico.pdf
    • https://cdn.shopify.com/s/files/1/0430/7291/3557/files/accordion_music_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/6894/7616/files/67930997565.pdf
    • https://cdn.shopify.com/s/files/1/0447/6433/2181/files/charlotte_s_web_e._b._white.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/jiwexixazunemobegakipa.pdf
    • https://cdn.shopify.com/s/files/1/0450/3309/5326/files/technical_dhiraj_apk_tik_tok.pdf
    • https://cdn.shopify.com/s/files/1/0437/7509/9029/files/zijipu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007132.bin
fc37e7423fd214901644aee1b25b22f1079c5b883823519a1850bae319e47866
pdf-font-stream PDF embedded font (sfnt) at offset 0x7132 4684 bytes
font_01_sfnt_off00008122.bin
d6d8686f8af41abf96e3e0140e009c21561dfce1411d4dc38979140af248a96d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8122 10520 bytes
font_02_sfnt_off0000a52c.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA52C 4324 bytes