Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dfe6fa7aa53bb51…

MALICIOUS

PDF

38.0 KB Created: 2020-08-22 19:45:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a7dde343224fd4e4f06d063436dc562 SHA-1: 196426276e1d7a4d196a902dfeee3572311391b9 SHA-256: 8dfe6fa7aa53bb5134b40c467aff544081bca39bb1c7360aaf4f8dd476b3479f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=chanute+police+department+reports'. This URL is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains references to this URL and a large number of other PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary intent appears to be directing users to malicious infrastructure via a deceptive link.

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=chanute+police+department+reports
    • http://files.jaydaitkaci.com/uploads/1/3/1/3/131384359/gujosejidisi.pdf
    • http://files.kellystevensscience.com/uploads/1/3/1/3/131381706/e7556a8.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/kigenijivad.pdf
    • https://cdn.shopify.com/s/files/1/0437/0654/8377/files/1998_jeep_cherokee_owners_manual_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/bokezol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52665001447.pdf
    • https://cdn.shopify.com/s/files/1/0438/3594/9218/files/74302419631.pdf
    • https://cdn.shopify.com/s/files/1/0429/6222/3263/files/81684156613.pdf
    • https://cdn.shopify.com/s/files/1/0451/8169/8199/files/format_code_visual_studio_code.pdf
    • https://cdn.shopify.com/s/files/1/0437/3784/1813/files/me_ashya_rangachi_marathi_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0437/6359/7473/files/tegaxikezated.pdf
    • https://cdn.shopify.com/s/files/1/0432/2364/6365/files/jufigizenufiwomelofoluz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0498/4474/files/61332930766.pdf
    • https://cdn.shopify.com/s/files/1/0433/3977/6159/files/11718298481.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/2836836304.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_off000054e8.bin
ccf978889f3aff5943b00f0a849bed5ba468a43fd0645ea3fd71d63d684cc727		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54E8 5220 bytes
font_01_sfnt_off0000666c.bin
1665689dc76cb8573c798f12200436e88b018ef8f39fa8f8333ebefba0aa560e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x666C 10700 bytes

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