Malicious PDF — malware analysis report

Static analysis result for SHA-256 54103726881a8cef…

MALICIOUS

PDF

39.7 KB Created: 2020-09-01 12:11:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b359659a78fb3ac1621a64a36d2e845 SHA-1: 4a2c5c6cb96d166b8eca2e2ed1fc4c830b9a9675 SHA-256: 54103726881a8cef1756b5140d35ac1fb6e0633490932d0d832c5891749f14ac
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=icloud+photos++to+pc'. This indicates a social engineering attempt to trick users into visiting a malicious site. The document body also contains this URL, reinforcing the lure. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links to other PDFs, suggesting a broader campaign to distribute malicious content.

Heuristics 3

  • 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.
  • 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.me/wix?keyword=icloud+photos++to+pc
    • https://cdn.shopify.com/s/files/1/0434/5180/9959/files/walamefi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7047/8746/files/juxidobasebevaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/2621/1238/files/46458653707.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/ramif.pdf
    • https://cdn.shopify.com/s/files/1/0461/5421/9683/files/31731272795.pdf
    • https://cdn.shopify.com/s/files/1/0454/2693/3916/files/adobe_sketch_apk_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/2558/7610/files/eviriyle_ren_kitab_zer_kiraz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6857/1296/files/sesazoraposusisogikowa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6596/5718/files/32182030185.pdf
    • https://cdn.shopify.com/s/files/1/0446/9778/0380/files/10437004147.pdf
    • https://cdn.shopify.com/s/files/1/0459/2425/3863/files/41684407125.pdf
    • https://cdn.shopify.com/s/files/1/0432/2246/6720/files/24936330463.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/lonadimolodunumevovidumem.pdf
    • https://cdn.shopify.com/s/files/1/0459/9483/6127/files/beauty_plus_app_for_windows_8._1.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/71879822693.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_off00005d27.bin
622f5b9ce5a18546e95397e43e0d59b2ea1fa9e1a2ec935b17b1895f15788e17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D27 4792 bytes
font_01_sfnt_off00006d77.bin
ad1efaf5f249bb6406d848f5ee552743db90cee1914415e01a7fb9ad5a0c1502		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D77 10964 bytes

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