Malicious PDF — malware analysis report

Static analysis result for SHA-256 59e4d4e0c98578c7…

MALICIOUS

PDF

47.5 KB Created: 2020-08-06 10:49:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2f0282d6baadc8ae2ae1eab52a565bd SHA-1: b2f9c1deb94069c2cfe5edd810d2c193dca4b187 SHA-256: 59e4d4e0c98578c74c8ed4c67b396811c7b5bb5eaa035d520bbaaeb199955dd7
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains text fragments that, when combined with the URL, suggest a lure for cracked software. The presence of numerous other links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=c%25C3%25A1ch+crack+file+pdf+b%25E1%25BB%258B+kh%25C3%25B3a
    • http://files.bsa-sccc-pack301.com/uploads/1/3/0/7/130738633/4f4176efd1.pdf
    • http://files.spadeesperanza.com/uploads/1/3/1/3/131398547/6669510.pdf
    • http://files.harmonyhillaussies.com/uploads/1/3/1/0/131070581/5941566.pdf
    • http://files.defeet.org/uploads/1/3/0/7/130739375/xupopafe.pdf
    • https://cdn.shopify.com/s/files/1/0434/8179/2664/files/jegejuzedow.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/24981702409.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/sirujibugokosogatorutono.pdf
    • https://cdn.shopify.com/s/files/1/0438/1140/5986/files/71869316944.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/la_guia_del_ligue.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/xexukorezifanuxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8646/files/57182382832.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/26323576767.pdf
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/benejesex.pdf
    • https://cdn.shopify.com/s/files/1/0431/4991/8362/files/rapaxepepuxogigugomopitiz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000628a.bin
f234680424facd2a56fcd63a41c9a40807f2df22ed6d48e9baa9ba2ec614394c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x628A 5608 bytes
font_01_sfnt_off000074ae.bin
0690a869b91a0ea286f0006a2facdd6a3953f641332113bed552851682603061		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74AE 10916 bytes
font_02_sfnt_off00009960.bin
069f5cdcb972b33999f3dc18a3e5b847fc2aa024b7c5b45b4734cedf253a8e5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9960 16376 bytes

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