Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c4a71cf8dfca8d9…

MALICIOUS

PDF

44.8 KB Created: 2020-08-14 01:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4337816d152bbe580b570c15dbe90ffd SHA-1: 0f903ab530e7a3ede0d40279311a3921ad938013 SHA-256: 2c4a71cf8dfca8d90c469fa94bbbcfc694cb7822891e8c8c1b847c604c5668ac
168 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=facebook+video+er+pc+exe'. Additionally, it exhibits a high-severity heuristic for a browser extension/update installation lure, suggesting social engineering to trick the user. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. The presence of a mass external PDF link farm further indicates a malicious workflow designed to distribute malicious content.

Heuristics 5

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=facebook+video+er+pc+exe
    • http://files.goingtruegreen.com/uploads/1/3/0/8/130874431/maderis-kaxapupejopote.pdf
    • http://files.andwhilewewait.org/uploads/1/3/1/4/131407406/425ced0.pdf
    • http://files.whatsthepointministries.com/uploads/1/3/0/7/130776085/a3211.pdf
    • http://tipebar.angipetersonpottery.com/uploads/1/3/0/7/130740596/4152278.pdf
    • http://ruvefef.wesvaldez.com/uploads/1/3/2/3/132303035/xajosuzumer_fofaxoga_paboja.pdf
    • https://cdn.shopify.com/s/files/1/0429/9423/7589/files/revoworezafazuku.pdf
    • https://cdn.shopify.com/s/files/1/0432/5759/4011/files/angle_of_repose_definition.pdf
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/xafejokulageduninimo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/sokexogugen.pdf
    • https://cdn.shopify.com/s/files/1/0432/4501/1112/files/40338363983.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3318/files/star_road_rom.pdf
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/24703607590.pdf
    • https://cdn.shopify.com/s/files/1/0431/9186/1410/files/67221197270.pdf
    • https://cdn.shopify.com/s/files/1/0432/5877/3662/files/38146331871.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/wevolotawowabo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1962/4870/files/zepozexadugikat.pdf
    • https://cdn.shopify.com/s/files/1/0434/3663/8360/files/sprint_web_texter_plus.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/xexubevulijizetedadebe.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/
    • https://cdn.shopify.com/s/files/1/0432/5759/4011/files/angle_of_re

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000724e.bin
66e676b534dbbc16a967f8e0766d6228e13f841153b3ac2bc79ef84b72f67604		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724E 5144 bytes
font_01_sfnt_off000083dc.bin
34017a31e93ebd0978bdf4d2b44fe61ce60fe6da98be8270067116363999e886		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83DC 9996 bytes

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