Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ccf91afd6cedb7c…

MALICIOUS

PDF

35.7 KB Created: 2020-08-19 08:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e3f0a87ca824e7ab628eb36e01f2413 SHA-1: 5cc16866a7ce9acdfed80e13439a22ddaaa589de SHA-256: 9ccf91afd6cedb7c13b3c827b7bfd9405d1b4b3a0ebc1ff43b9e3e6571ba582a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.ru/pify?keyword=baahubali+1+tamil+full+movie++1080p`. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious content. The presence of numerous other PDF links further supports a link-farming or redirection attack pattern.

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=baahubali+1+tamil+full+movie++1080p
    • http://files.kidsarecaregiverstoo.com/uploads/1/3/0/8/130873927/3131258.pdf
    • http://files.leongraymusic.com/uploads/1/3/0/7/130776599/2105442.pdf
    • http://files.athleticsnorth.net/uploads/1/3/1/4/131408581/d5d1091c44991.pdf
    • https://cdn.shopify.com/s/files/1/0433/9892/2403/files/brad_smith_microsoft_contact_information.pdf
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/fawexipab.pdf
    • https://cdn.shopify.com/s/files/1/0449/2728/7451/files/chennai_google_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/kenofadudolimirogidumazid.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0690/files/wagigigokodumenanuxo.pdf
    • https://cdn.shopify.com/s/files/1/0436/6175/4518/files/nozazonov.pdf
    • https://cdn.shopify.com/s/files/1/0432/6519/6197/files/afrikaner_nationalism_essay.pdf
    • https://cdn.shopify.com/s/files/1/0434/2949/4936/files/sinugak.pdf
    • https://cdn.shopify.com/s/files/1/0430/8172/8151/files/14396196252.pdf
    • https://cdn.shopify.com/s/files/1/0431/8219/4852/files/41575416702.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_off00004d4f.bin
36f45c7196089757223585324e8cbed54b88d34c64719eb349a50ed6921443df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D4F 5504 bytes
font_01_sfnt_off00005ff8.bin
75033f8fab9192de3e24caac09e5f1741a0e1bc7b593cac3ae19d075b4e31733		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF8 9984 bytes

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