Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e559b2c68392ce2…

MALICIOUS

PDF

46.2 KB Created: 2020-08-26 03:04:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 739122c3efdfff63b04119ab7204e511 SHA-1: 5edcc0e8d502fdba70a6712e49a77c0640b1cef3 SHA-256: 3e559b2c68392ce23307345d5e5ab2fa7b4780bacf2517f53ca0fbf84c900813
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to a known malicious URL. Additionally, PDF_SEO_LINK_FARM indicates a large number of external links, many of which are hosted on Shopify but point to potentially malicious content. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=industrial+accident+the+story+of+wax, which is likely intended to trick users into clicking it by appearing to be related to an industrial accident. The presence of numerous other PDF links suggests a link farm or redirection strategy.

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=industrial+accident+the+story+of+wax
    • http://lamipemi.trinibnb.com/uploads/1/3/1/0/131070420/dowofezizekusizad.pdf
    • http://files.gateways2heritage.com/uploads/1/3/1/4/131453512/xavupanepujutirulad.pdf
    • http://files.posture4life.net/uploads/1/3/1/3/131382395/3809411.pdf
    • http://zekokif.goldenreiki.co.nz/uploads/1/3/1/4/131438304/dorebevofejinezeg.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/abel_tasman_national_park_map.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/78907474610.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/18680213955.pdf
    • https://cdn.shopify.com/s/files/1/0447/3192/4629/files/95827312893.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/35526127424.pdf
    • https://cdn.shopify.com/s/files/1/0439/6072/9758/files/unity_web_player_firefox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gopag.pdf
    • https://cdn.shopify.com/s/files/1/0462/6415/6314/files/fiwuzelatome.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/99672366570.pdf
    • https://cdn.shopify.com/s/files/1/0435/9582/5320/files/topic_about_afghanistan_history.pdf
    • https://cdn.shopify.com/s/files/1/0433/4321/6789/files/cisco_sf95d-_16_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0447/4689/9607/files/stewart_calculus_8th_edition_solutions_manual.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_off0000761c.bin
6b1bcbbb621f4b377151febc8340a2b0a302d8c87c6445b9da94a38427bd04cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x761C 5308 bytes
font_01_sfnt_off00008830.bin
8493ceb3ba880c2440eeb685721dbf233877e145b46af608fed09dcb10536a87
pdf-font-stream PDF embedded font (sfnt) at offset 0x8830 10416 bytes