Malicious PDF — malware analysis report

Static analysis result for SHA-256 55920699fc32cf3c…

MALICIOUS

PDF

50.9 KB Created: 2020-08-22 06:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2f25b3b79415bf7da1351427d1e4caf SHA-1: 150529e019977644a851af6dcfbe1662357267d7 SHA-256: 55920699fc32cf3cb00d7df6af1c98141d0a9d08920c5894d419d05075b7014a
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=free+login+page+template+in+asp.+net'. The document body also contains this URL and numerous other links hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document's content is designed to trick the user into installing something, which is a common social engineering tactic to facilitate malware delivery or credential theft. No scripts were extracted from this sample.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=free+login+page+template+in+asp.+net
    • http://files.thisorthatkids.com/uploads/1/3/0/8/130874633/d117eff4f37.pdf
    • https://cdn.shopify.com/s/files/1/0431/6148/5471/files/80446930090.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/busigapofovufagexefawodu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/punuwelujuso.pdf
    • https://cdn.shopify.com/s/files/1/0429/4184/1575/files/kajob.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/82368684864.pdf
    • https://cdn.shopify.com/s/files/1/0429/0209/3987/files/18883057335.pdf
    • https://cdn.shopify.com/s/files/1/0432/0601/7185/files/760_pumpmaster_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9658/8967/files/crossfit_bodyweight_workout_plan.pdf
    • https://cdn.shopify.com/s/files/1/0434/4152/0790/files/82029717402.pdf
    • https://cdn.shopify.com/s/files/1/0431/3730/2679/files/ropekolabajewodoludi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0802/3966/files/ba_first_year_english_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1062/9532/files/wolike.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xeniwepisovera.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_off000089cd.bin
2074f051b787538cdfbaeefc508985427006ef4021b06e54c366d8239df6e10c
pdf-font-stream PDF embedded font (sfnt) at offset 0x89CD 5128 bytes
font_01_sfnt_off00009b33.bin
cea4d27ec56d4baa799d38531c03b43cdc360f62437fb8edaf3016bf28ea7f43
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B33 10392 bytes