Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fd27208aea8eb9e…

MALICIOUS

PDF

49.3 KB Created: 2020-08-21 07:59:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5973282c0ddbe76d3244bb1be2e14ade SHA-1: 0b41df4d7de13c1655338c8988005cdaec4731c0 SHA-256: 8fd27208aea8eb9e6bec6528c3853cbba63a4556d8d4e8b1ab966dd9bebd556d
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used to create link farms for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=le+dialogisme+pdf'. While no scripts were extracted, the document body contains obfuscated text and the embedded URL suggests a phishing or redirection 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=le+dialogisme+pdf
    • http://vasonexu.jessethomascomics.com/uploads/1/3/2/6/132695839/dokaj.pdf
    • http://zanabi.arrowtarian.com/uploads/1/3/0/9/130969360/a6f64a.pdf
    • http://files.krgriffiths.org/uploads/1/3/0/8/130874129/96dffd9.pdf
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/79977284806.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/70055193484.pdf
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/sazipirexajujeren.pdf
    • https://cdn.shopify.com/s/files/1/0437/3974/2369/files/kudugepedoka.pdf
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/49351351590.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/31177679734.pdf
    • https://cdn.shopify.com/s/files/1/0437/7716/3426/files/42194941133.pdf
    • https://cdn.shopify.com/s/files/1/0439/1570/6523/files/autumn_leaves_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/7260/1756/files/bekufogiwibaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejumaxerufu.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_off00007edd.bin
585a52c0047ec6eedf792d982e40575783cd4147ae0c323812538780bb01d8b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDD 5208 bytes
font_01_sfnt_off00009090.bin
7b29be22788f91b78abb97d4d351604795e793a4cdb44160da25b6619dee852e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9090 12312 bytes

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