Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4cb7001bf9f3c7c…

MALICIOUS

PDF

48.1 KB Created: 2020-07-31 06:12:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6648c3a54755baceab741449ac89b36a SHA-1: 4ca943f808b94ccd2a81fa508596c9e0b7eedb35 SHA-256: c4cb7001bf9f3c7c268626fca841b8191a43d0eb6696498b0072d8dcf3f17b33
120 Risk Score

Malware Insights

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

The PDF 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 also hosts a large number of links to other PDFs, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains keywords related to 'Facebook business page template pdf', indicating a social engineering 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=facebook+business+page+template+pdf
    • http://files.ms172.org/uploads/1/3/1/3/131380008/7bbdd5c7fe685.pdf
    • http://files.allthebiscuitsingeorgia.com/uploads/1/3/1/4/131483830/vurip_wogumav.pdf
    • http://files.keyboardmelodiesforseniors.com/uploads/1/3/2/6/132681495/7125080.pdf
    • http://files.clarklavery.com/uploads/1/3/1/4/131437683/zixebosul_wemabukowazive.pdf
    • http://files.embodyourlight.com/uploads/1/3/1/8/131871571/5868893.pdf
    • http://files.clarklavery
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pagujusevidunevaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/15138334831.pdf
    • https://cdn.shopify.com/s/files/1/0431/5679/9647/files/zadekoximukoloxiregizuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/19048795736.pdf
    • https://cdn.shopify.com/s/files/1/0434/1130/8696/files/93631720586.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/tajujarufexusatexiges.pdf
    • https://cdn.shopify.com/s/files/1/0432/0781/9422/files/7697839323.pdf
    • https://cdn.shopify.com/s/files/1/0431/0761/4882/files/gagaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/2897/0647/files/kibovixuvakukukedaxukinol.pdf
    • https://cdn.shopify.com/s/files/1/0435/5653/6479/files/faduwufoxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/xipuwomilus.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91337380597.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_off00007cc1.bin
24ab34654c75f6340b4f823b022443de4a2207d2ed9c672436198486ffa5a97d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC1 5420 bytes
font_01_sfnt_off00008f13.bin
6c4d58f44286d07afa12915ca4be67f58e4bde158755b814e7e74b84209635fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F13 10552 bytes

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