Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc91f146bbe7b249…

MALICIOUS

PDF

35.4 KB Created: 2020-08-19 07:38:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a516293c65680708026e803afe41037f SHA-1: 0090a053a3d1e49b9eeab5bb101279996d088295 SHA-256: fc91f146bbe7b2498d6d5d4a0731a68cac564b07f19aad33a50a890d17baab2d
160 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning attempt. One critical heuristic indicates a malicious redirector link to 'ttraff.cc', which is likely the primary malicious destination. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document's purpose is to trick the user into believing they need a password for an archive, a common tactic to evade initial security scanning. No scripts were extracted, limiting the analysis of direct execution behavior.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.cc/pify?keyword=online+game++sites
    • http://jaxuta.rachaelbudd.com/uploads/1/3/1/4/131453133/tibikajigotef_xenidalexowov.pdf
    • http://files.epicfh.com/uploads/1/3/1/3/131383629/56fed03568bd22c.pdf
    • http://bokopuku.dovetailmt.com/uploads/1/3/0/8/130814729/muvapim-romugepaduwel-romerot.pdf
    • http://files.completecarechiropractictables.com/uploads/1/3/0/7/130739922/xefadu.pdf
    • https://cdn.shopify.com/s/files/1/0438/6763/5867/files/blackbird_beatles_tab.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/78907474610.pdf
    • https://cdn.shopify.com/s/files/1/0431/1062/9532/files/taluzekazivofezixuvezegis.pdf
    • https://cdn.shopify.com/s/files/1/0431/7023/4527/files/66598708275.pdf
    • https://cdn.shopify.com/s/files/1/0429/4492/1766/files/69417126413.pdf
    • https://cdn.shopify.com/s/files/1/0433/7070/9142/files/briggs_and_stratton_carburetor.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/bedikepes.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/webono.pdf
    • https://cdn.shopify.com/s/files/1/0431/0745/1041/files/top_10_engineering_colleges_in_hyderabad.pdf
    • https://cdn.shopify.com/s/files/1/0435/1236/5211/files/adobe_audition_free_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/chevy_truck_steering_column_parts_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0433/9453/1486/files/hunger_games_book_file.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_off00004ef8.bin
928e67c40837658faefacadb196594fc446d79b64dd973866e7bc73adc7c6542
pdf-font-stream PDF embedded font (sfnt) at offset 0x4EF8 4936 bytes
font_01_sfnt_off00005fb6.bin
6d19fd889ca749d8210fc71f5f73592be3b78d262a376ca152af0f9bf345c78d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB6 9760 bytes