Malicious PDF — malware analysis report

Static analysis result for SHA-256 8431697dbe741a25…

MALICIOUS

PDF

42.7 KB Created: 2020-08-15 00:20:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 495c21e447adf1f0e9f0b03fadf02a90 SHA-1: 3f3662b95a01583159aef50c8717a9a8d93b4619 SHA-256: 8431697dbe741a2556a34adf81fada04a5ad20032458e7b1fe4df7de1729dd06
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=online+hd+video+er+for+android'. This URL is embedded within the document body, suggesting a social engineering lure to trick users into visiting a malicious site. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which point to Shopify domains, likely for SEO manipulation or to obscure the true malicious destination. No scripts were extracted, but the presence of a malicious redirector and the link farm structure strongly indicate a phishing or malware distribution attempt.

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=online+hd+video+er+for+android
    • http://gadeva.larabranca.com/uploads/1/3/0/7/130775195/tizoxiretak.pdf
    • http://files.bethabarachurch.com/uploads/1/3/1/4/131437873/kafidime_jisutukixobif.pdf
    • http://xibosukuf.sweetestdreams.org/uploads/1/3/0/7/130775734/nirefevoxudogon_dubebise_fezobelada.pdf
    • http://files.lizastories.com/uploads/1/3/0/7/130775387/6b4fb799c5.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/38620753488.pdf
    • https://cdn.shopify.com/s/files/1/0434/9729/1942/files/automatismos_industriales_libro.pdf
    • https://cdn.shopify.com/s/files/1/0448/3461/9549/files/garmin_forerunner_405_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/2969/0525/files/how_to_use_webhooks_discord.pdf
    • https://cdn.shopify.com/s/files/1/0432/8036/7780/files/rebawoxadadaridozusef.pdf
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/topozabixafipilotisenutup.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8387/files/furoralutuxowofutusa.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/gapufifapimesi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7193/files/zunedazu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4532/8808/files/febawosorokusunug.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_off00006a0e.bin
864448db9509dbae491a687c07646df47926ddfb001a2580fd0328fba678a8e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0E 4904 bytes
font_01_sfnt_off00007aba.bin
61828a5cf606d7a040ea55472d31d6ed278cbd2588db26d7b8ee305bd678b97f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABA 10404 bytes

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