Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1d902cbf577eea0…

MALICIOUS

PDF

42.0 KB Created: 2020-08-02 07:59:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad6c6493cbb9c4ebdb1fb36a9820eed1 SHA-1: 80f95e063885106ced3d93460acf2e55f65a0201 SHA-256: c1d902cbf577eea0f03422a548fb8bd0c225b8849f5469037f314a7d033099fc
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the URL https://ttraff.ru/pify?keyword=como+poner+acentos, which is flagged as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=como+poner+acentos
    • http://files.happywillowsoap.com/uploads/1/3/1/4/131437037/91c6c9b.pdf
    • http://files.raptattoo.net/uploads/1/3/0/7/130739488/8353511.pdf
    • http://files.slaglesfamilyfarm.com/uploads/1/3/0/8/130873903/6479036.pdf
    • http://files.somersetbrewers.com/uploads/1/3/1/4/131452733/0f5804cb595c.pdf
    • http://files.miriamruberlartist.com/uploads/1/3/1/4/131483019/828517e6fc26dc2.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3118/files/11740869394.pdf
    • https://cdn.shopify.com/s/files/1/0434/0849/0663/files/xakinoxa.pdf
    • https://cdn.shopify.com/s/files/1/0437/6903/6958/files/usb_mod_menu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6175/5547/files/gisenozujevatin.pdf
    • https://cdn.shopify.com/s/files/1/0434/1766/5701/files/2809663128.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/wesiximalesujoxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9477/7760/files/87586809450.pdf
    • https://cdn.shopify.com/s/files/1/0433/7814/7491/files/74285605009.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/65965445189.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/gujukozivokonovujepa.pdf
    • https://cdn.shopify.com/s/files/1/0438/8706/7291/files/ludajudopetavixod.pdf
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/50131784705.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_off0000631d.bin
32f40e639b5ede65897d29caef4ec033514b0e9905a47db5a7d198085594fffe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x631D 4952 bytes
font_01_sfnt_off000073d2.bin
87485515f9bc4bb4b368c18b63a7d63820ea4ff1c16e3e4a7e457a8906561551		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73D2 12148 bytes

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