Malicious PDF — malware analysis report

Static analysis result for SHA-256 3de41f5bee7841e5…

MALICIOUS

PDF

52.0 KB Created: 2020-07-24 09:54:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40252493900a2084814ffd6c64d23649 SHA-1: bb4b753b293d827043de8de8c8f0ee61f51ff801 SHA-256: 3de41f5bee7841e52c13d029698e52c655b0df8c68814a63c9f523f9c4bcc82e
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used for SEO link farms or to redirect users to malicious sites. One of the primary links points to a known malicious redirector. The document body appears to be corrupted or heavily obfuscated, preventing a deeper analysis of its specific content or intent beyond the link farm.

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=aifmd+reporting+xml
    • http://files.goldenvalleyffa.com/uploads/1/3/1/3/131381772/raguzi.pdf
    • http://files.flourishkiwi.com/uploads/1/3/1/4/131483097/5519565.pdf
    • http://files.jollygoods.shop/uploads/1/3/1/8/131871799/5389236.pdf
    • http://files.bruceloeb.com/uploads/1/3/1/3/131398366/1016339.pdf
    • http://files.jrouamnationalcouncil.org/uploads/1/3/1/6/131606393/nujariralewanolu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0408/2851/files/36468172126.pdf
    • https://cdn.shopify.com/s/files/1/0432/0559/1200/files/33641071703.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/mowakarogefakefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/zejizirurezez.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pepefawabibuf.pdf
    • https://cdn.shopify.com/s/files/1/0435/0581/1608/files/pobimewi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9985/7823/files/fudonoruwevijinaso.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/68824567379.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/
    • https://cdn.shopify.com/s/files/1/0432/4828

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085bb.bin
6bf69fc8b07c32e607a2546b9ef90b27c520bfc45b7d4e81a95fd23c4c9a4fbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85BB 4820 bytes
font_01_sfnt_off000095fe.bin
0ebcb76ad5be651da0200cb0d1139fb80e75785a80663a77c3ace36866399fd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95FE 14624 bytes

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