Malicious PDF — malware analysis report

Static analysis result for SHA-256 89737bdddde38e65…

MALICIOUS

PDF

38.3 KB Created: 2020-08-19 09:11:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f90c28109e767723dbf3d6e4b49fbeb SHA-1: 349ca785f0911dfb3d5c8097bedd7e11b40e3163 SHA-256: 89737bdddde38e65d65891f1724be7d4b4c36f49ff3a6cf3b8d97819366719b8
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of these links, 'https://ttraff.cc/pify?keyword=murottal+abu+usamah+surah+an+naba', points to a known malicious redirector. The document body appears to be corrupted or obfuscated, but the presence of numerous links suggests a social engineering or SEO manipulation tactic. No scripts were extracted from this sample.

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.cc/pify?keyword=murottal+abu+usamah+surah+an+naba
    • http://ranovidi.1lifetravel.voyagerwebsites.com/uploads/1/3/0/9/130969940/8657442.pdf
    • http://files.ywp-za.org/uploads/1/3/1/1/131163879/28be24859764.pdf
    • https://cdn.shopify.com/s/files/1/0437/8384/8097/files/xigobuteguxodavinilonabog.pdf
    • https://cdn.shopify.com/s/files/1/0429/0471/5427/files/lutejesimo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2135/files/48641975201.pdf
    • https://cdn.shopify.com/s/files/1/0434/5715/1129/files/43133341422.pdf
    • https://cdn.shopify.com/s/files/1/0435/3648/2458/files/28148288718.pdf
    • https://cdn.shopify.com/s/files/1/0429/2087/0044/files/zisov.pdf
    • https://cdn.shopify.com/s/files/1/0437/1116/8664/files/ayyappa_bhajan_songs_lyrics_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0432/2141/8147/files/wagiwojuzuvime.pdf
    • https://cdn.shopify.com/s/files/1/0432/1551/9912/files/pdf_splitter_and_merger_free_filehippo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4288/2215/files/high_graphics_offline_android_games.pdf
    • https://cdn.shopify.com/s/files/1/0437/5206/3125/files/acres_of_diamonds_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/zooka_pitching_machine.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6143/files/96749566500.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_off00005859.bin
af56519ec185085d71e02dd17538c6d19c8881852def8509d083f430ba09a04f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5859 5068 bytes
font_01_sfnt_off0000696e.bin
58617ae88a9bea3dc6e22fb5c9b5a2703c1c8e7c73c8d4e9f0a8ad7c82d897af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x696E 10288 bytes

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