Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad268a51c398cfef…

MALICIOUS

PDF

41.3 KB Created: 2020-08-04 07:35:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c4553092652c0628157586a3c6553a3 SHA-1: c65f2b43096d3a5cd2613d64f17257d45544db78 SHA-256: ad268a51c398cfeffb48d8142bf2644635f2c61c23480271ee18f567261a44c4
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 ttraff.com. Additionally, it exhibits a PDF link farm heuristic, with many links pointing to cdn.shopify.com, though one specific link is confirmed benign. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a 'download button' lure and a 'clipboard command lure' heuristic further suggests a malicious intent to trick the user into interacting with the document and potentially executing further commands.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.com/pify?keyword=architecture+residential+drafting+and+design+10th+edition+pdf
    • http://files.5ivecoffee.com/uploads/1/3/1/4/131409693/xuvonomivegu.pdf
    • http://files.digitalwalestec.com/uploads/1/3/1/4/131437005/4695606.pdf
    • http://files.honeywestco.co/uploads/1/3/0/7/130739214/9958978.pdf
    • http://files.superbfitoutgroup.com/uploads/1/3/1/8/131856602/kodevumobegumozojuno.pdf
    • http://files.empirecoffeecompany.co.nz/uploads/1/3/1/1/131164456/tazinusevuda-rejodev-renewof-tutibitevizugi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/wefax.pdf
    • https://cdn.shopify.com/s/files/1/0434/3005/2005/files/46290970719.pdf
    • https://cdn.shopify.com/s/files/1/0429/6087/9782/files/woramofedemuxusapoxizoluk.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/mofekikapogogigefomitaxos.pdf
    • https://cdn.shopify.com/s/files/1/0437/4711/5157/files/25744043469.pdf
    • https://cdn.shopify.com/s/files/1/0430/7818/9205/files/93420545989.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/1356245378.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/vuzipitemele.pdf
    • https://cdn.shopify.com/s/files/1/0430/6088/7705/files/dujanivujapub.pdf
    • https://cdn.shopify.com/s/files/1/0433/1637/9816/files/vuzapu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0673/7053/files/44600263013.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/mogenusidamurigokezoroki.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_off000063f7.bin
c95a450021ec0d08cc8120ae749fa800061df4f4f8eb02e8dae88b2665a25327		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63F7 5600 bytes
font_01_sfnt_off00007706.bin
de74b9f513bcead008b6f75c2f8637f323c08906ececf3b728cca2b560699d24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7706 9580 bytes

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