Malicious PDF — malware analysis report

Static analysis result for SHA-256 579d667361b6102f…

MALICIOUS

PDF

48.5 KB Created: 2020-08-15 22:45:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65adf8fe19ba149498eab42048047f94 SHA-1: 21bacf22f6e05df19a1e173f6a8599eb5f791b9d SHA-256: 579d667361b6102f3126fc652052b8e9da47d501d268c61859c2a008bd14838e
120 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination of the malicious payload. The document body, though partially corrupted, includes the same query string as the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

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=can%2527+t+install+busybox+android
    • http://files.explorestanton.com/uploads/1/3/1/4/131453216/6741733.pdf
    • http://fumetagot.trofefashion.com/uploads/1/3/0/7/130776106/nararidonefimutafo.pdf
    • http://kemuku.norwinxc.com/uploads/1/3/1/8/131856772/9f33fbf3066c.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/41219517425.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/clasificacion_borman_cancer_gastrico.pdf
    • https://cdn.shopify.com/s/files/1/0430/7219/2669/files/92865421687.pdf
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/retiduxofulit.pdf
    • https://cdn.shopify.com/s/files/1/0432/9537/5524/files/98335244825.pdf
    • https://cdn.shopify.com/s/files/1/0431/7655/8746/files/fasovenaxinu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9846/2624/files/nonet.pdf
    • https://cdn.shopify.com/s/files/1/0432/8787/1646/files/26980223902.pdf
    • https://cdn.shopify.com/s/files/1/0431/3346/8839/files/concierto_de_aranjuez_adagio_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0435/6826/7423/files/93513223834.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_off00007118.bin
9b9fc30a88d3affb5655eee5443c3238fd47d5107756f7e633e1dfcc1e32a798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7118 4948 bytes
font_01_sfnt_off000081f6.bin
793588e28036a38d8ef510407bebbbe2b5bf4764ef648467a03094ae451791bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81F6 10968 bytes
font_02_sfnt_off0000a725.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA725 4324 bytes

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