Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab66454d7e0968e8…

MALICIOUS

PDF

42.0 KB Created: 2020-08-25 22:18:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 578e76c3c6d8e202a5b97851671b57fa SHA-1: bbbb006880bcb47b4297df6c6900813cb21a9d56 SHA-256: ab66454d7e0968e81de35ff5de554743b03cd74d59ec3ed85c4444615e13da39
120 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a piano sheet music download. The link leads to 'ttraff.com', which is flagged as malicious. The document also contains a large number of embedded links, many pointing to Shopify, likely as part of an SEO link farm to obscure the malicious redirector. 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.com/pify?keyword=amazing+grace+piano+sheet+music+for+beginners+with+letters
    • http://files.mcardleandcompanybuilders.com/uploads/1/3/2/6/132681836/sidurejiji.pdf
    • https://cdn.shopify.com/s/files/1/0435/3658/0757/files/93446179286.pdf
    • https://cdn.shopify.com/s/files/1/0431/2642/3708/files/singh_is_king_film_song_ming.pdf
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/62544328563.pdf
    • https://cdn.shopify.com/s/files/1/0432/5644/7136/files/the_ugly_duckling_story_with_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0434/4836/9309/files/definition_of_cellulitis.pdf
    • https://cdn.shopify.com/s/files/1/0432/7247/0686/files/gemalogir.pdf
    • https://cdn.shopify.com/s/files/1/0431/1482/3844/files/56798725411.pdf
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/entrepreneurship_skills_books.pdf
    • https://cdn.shopify.com/s/files/1/0435/6656/3487/files/couper_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/kuvigariralu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2438/2114/files/flashlight_lyrics_parliament.pdf
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/achilles_tendinopathy_stretches.pdf
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/36898954388.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_off000063ed.bin
ddf2863491b1e21875d1cba460abb4895a7e6c45f13136dbfc309b9e12590c60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63ED 5700 bytes
font_01_sfnt_off0000772f.bin
3c499f73702073aed7b583e0399d59ef256122b9c3d69e19806007abbc001569		 pdf-font-stream PDF embedded font (sfnt) at offset 0x772F 10348 bytes

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