Malicious PDF — malware analysis report

Static analysis result for SHA-256 afc671b17c6190fe…

MALICIOUS

PDF

35.0 KB Created: 2020-09-16 01:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78777bb5830d4cf936129ff8be1f342e SHA-1: a4f7fb373dafe780a9831d3cfd767871cc3f5c75 SHA-256: afc671b17c6190fe29dd959fff2832f33b799d05198d9f7788d03c29795a6c37
120 Risk Score

Malware Insights

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

The PDF document contains a mass external link farm, with a primary link redirecting to malicious infrastructure. The document body, though heavily obfuscated, contains text referencing 'Nintendo dsi manual' and the malicious URL, suggesting a lure to trick users into clicking the link. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the redirection to known malicious infrastructure.

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.club/pify?keyword=nintendo+dsi+manual
    • http://zibupo.citizensforcivicrenewal.org/uploads/1/3/1/4/131453915/sobolevev.pdf
    • http://files.vandalsgames.com/uploads/1/3/0/8/130874683/pipowuxezujijume.pdf
    • http://zufin.wordsplusthoughts.com/uploads/1/3/1/4/131453870/bb024a3f49254.pdf
    • http://files.smaexhibition-upcloseandfaraway.org/uploads/1/3/1/1/131164462/5635740.pdf
    • http://files.nswspruikle.com/uploads/1/3/1/4/131407284/zutari.pdf
    • http://files.freezeyogurtbar.com/uploads/1/3/2/6/132696465/6031327.pdf
    • http://files.humanmovements.com/uploads/1/3/2/7/132740892/rilivuxidufexatesime.pdf
    • https://cdn.shopify.com/s/files/1/0429/0094/7103/files/digubaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/73151122633.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1520/files/72387461349.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_off00004caa.bin
89c254d4424be30c7f64e153db8dfc5984705f456df78d4aeec0e6e2ffe478dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CAA 4844 bytes
font_01_sfnt_off00005d13.bin
970819f9fce22dd06b88fad2fdf04bbe9fb835b620edcc2627b632b290e44202		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D13 10336 bytes

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