Malicious PDF — malware analysis report

Static analysis result for SHA-256 a56f7040ba2a5a72…

MALICIOUS

PDF

49.5 KB Created: 2020-08-20 01:12:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 910240b570fca8cfe73e4d5a21c9f109 SHA-1: 57a1f1b3e726d22d3c202a4d0ebf3e62683dcb0c SHA-256: a56f7040ba2a5a72ef6cbff5a5b811b9d19248d245066f53872c009e011a4022
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links redirects to a known malicious domain (ttraff.ru). This suggests a social engineering attack aimed at directing users to malicious content through a deceptive link farm. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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.ru/pify?keyword=bamini+tamil+font+layout+pdf
    • http://sukejob.amybourne.com/uploads/1/3/1/6/131637136/kakovepasevogo.pdf
    • http://files.dallasbychocolate.com/uploads/1/3/0/7/130776445/nafuwom_gogidi_fiwujar.pdf
    • http://files.boxedph.shop/uploads/1/3/2/7/132712088/goxipavopemilifixo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4297/1553/files/veledofo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5510/files/51442085064.pdf
    • https://cdn.shopify.com/s/files/1/0454/8486/7736/files/surviving_sepsis_campaign_guidelines_2018.pdf
    • https://cdn.shopify.com/s/files/1/0431/3055/2474/files/anticoagulantes_orales.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/cryptic_quiz_answers_4-_n.pdf
    • https://cdn.shopify.com/s/files/1/0459/2061/6599/files/jadojugeboxijavipes.pdf
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/juxaweli.pdf
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/ketemuzifazebisugedi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/yu_yu_hakusho_seasons.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e0e.bin
52720d2c1c230f436267ecdaf11b708fa8ec4d1dc188fd06060f0a56c72afee6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E0E 5064 bytes
font_01_sfnt_off00006f3d.bin
cf3ec933474e75256b248eec899c6e6ac661939012486fee90e39db7684ec745		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3D 4508 bytes
font_02_sfnt_off00007e38.bin
1ab3d21303d8837c1bf2c4bfde3d1efe6ee0809b10304d04232edfdcc401dc18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E38 11180 bytes
font_03_sfnt_off0000a43a.bin
ff88491e9b53368aa3a30e8dd34a5b3a2a650623abbadb69eae8d512e7150c33		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA43A 16084 bytes

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