Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5f4e507d0f225a…

MALICIOUS

PDF

38.3 KB Created: 2020-08-15 03:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 963b9c7c8a0768992f518a13d728e73e SHA-1: 38c87309dddb2ee4e9c9a9bfde02519a71502569 SHA-256: 7b5f4e507d0f225abc5f92f3c8691d82e07f608a17785193c0cd4036a387a554
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, many pointing to external PDF files hosted on various domains, including Shopify. One URL, 'https://ttraff.cc/pify?keyword=ashamed+form+a+sentence', is flagged as a malicious redirector. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content indirectly. No scripts were extracted, and the document body is largely unreadable binary data.

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=ashamed+form+a+sentence
    • http://files.mjohnson7.com/uploads/1/3/0/7/130739060/lerisutelizatetel.pdf
    • http://files.frostbites.net/uploads/1/3/1/3/131382243/1cbb731f37b2d.pdf
    • http://files.heatingbreakdownservice.com/uploads/1/3/1/1/131163561/bezixuvofemunam_dipevi.pdf
    • http://files.kickitlivingweekly.com/uploads/1/3/1/8/131871614/tilivalaxazu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/zisozolozapulesav.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/62826045438.pdf
    • https://cdn.shopify.com/s/files/1/0430/3775/3501/files/dukijepasoxefud.pdf
    • https://cdn.shopify.com/s/files/1/0432/6811/2550/files/12167557464.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/31672959013.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5127/files/zunevetixodizipitisodavaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/titorolezoronaze.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/gelonenotifonadu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/muatan_dan_medan_listrik.pdf
    • https://cdn.shopify.com/s/files/1/0431/1613/4562/files/zoruzaperovuzamobeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/naxerejutopez.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_off00005af1.bin
7b62f0177c3aebcf26bb707490cac240bc2f757b5e7840e03aad7fb60efd718c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF1 5220 bytes
font_01_sfnt_off00006c81.bin
89232fa6b9bb88f19126aae41fbcb61bb9d7b2e3701933f562c1feed4a489082		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C81 9496 bytes

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