Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed8ee4e2fcd68d5…

MALICIOUS

PDF

41.3 KB Created: 2020-09-10 08:42:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9cdfb83d463bb31e1e05e91604a935f SHA-1: a08779529cba4cd9e63f2da05d65ce913c69e6da SHA-256: bed8ee4e2fcd68d5aacecc0c600dd33fb0d8f166aecb294a0f7bbdd91587fb9b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a heuristic firing for a malicious redirector link and a link farm, indicating it's designed to lead users to malicious sites. The document body and heuristics suggest a social-engineering lure to install a browser extension or update. The primary malicious URL identified is https://ttraff.com/pify?keyword=adblock+plus+chrome+softonic, which is likely used to redirect users to a malicious download or phishing page.

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.com/pify?keyword=adblock+plus+chrome+softonic
    • http://files.masjidfreehaven.org/uploads/1/3/0/8/130874067/7371706.pdf
    • http://files.kylavender.com/uploads/1/3/1/4/131437956/rojifuni_fawim_sigufaze.pdf
    • http://files.alortolani.com/uploads/1/3/1/4/131437724/miwojiwe_tofira_sawakijopiwebag.pdf
    • https://static.usrfiles.com/ugd/db1da1_dc5fe49c2b4e4ac290fa616769f3870b.pdf
    • https://static.usrfiles.com/ugd/b09e1d_589ac83bdeb044efbee479a2650ddf7c.pdf
    • https://static.usrfiles.com/ugd/8e66a5_65d09d581589486eaa6d704be6891967.pdf
    • https://static.usrfiles.com/ugd/66f7a0_11fe1c4f0e32443ca8e53066e4bc53bb.pdf
    • https://cdn.shopify.com/s/files/1/0434/7278/1478/files/contrastive_analysis_james.pdf
    • https://cdn.shopify.com/s/files/1/0434/6219/7400/files/4._2_cero_defectos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/38912429708.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7831/files/gander_mountain_guide_series_rain_jacket.pdf
    • https://cdn.shopify.com/s/files/1/0428/8649/6415/files/martial_arts_pose.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aad.bin
42bd19967793e0313903eb95e65dcb5f8930b780571925b7be20ab6e07dead14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAD 5376 bytes
font_01_sfnt_off00007cc9.bin
a6a94868060b32a27cad10d65ffc86e90f5ff175c06987f6511023cf67d03c21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC9 10900 bytes

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