Malicious PDF — malware analysis report

Static analysis result for SHA-256 9accfeac28336586…

MALICIOUS

PDF

40.1 KB Created: 2020-08-28 07:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9902ebeac5173d7a4b8cb1d469ebeee4 SHA-1: c55b09332b95787cccdc9857ea4df453136098c3 SHA-256: 9accfeac28336586fce61edf439f0a76b28bef3abe262a2089018c5a7ce574c2
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.me/pify?keyword=naruto+season+1+full+episode'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary intent is to redirect the user to a malicious site, likely for phishing or to download further malware.

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.me/pify?keyword=naruto+season+1+full+episode
    • http://vosam.dsmgraphics.com/uploads/1/3/0/7/130739616/lakut_wuxaziwuwona.pdf
    • http://files.maidtoshineservices.net/uploads/1/3/1/4/131437268/29f33e.pdf
    • http://files.andrewmaxbauer.com/uploads/1/3/1/4/131453124/xeragagovumazus.pdf
    • http://kuzimekoz.casacose.com/uploads/1/3/1/4/131407469/vubuvudixozisan.pdf
    • https://cdn.shopify.com/s/files/1/0432/6473/7433/files/fudazagegadokugajazos.pdf
    • https://cdn.shopify.com/s/files/1/0431/3346/8821/files/55376115693.pdf
    • https://cdn.shopify.com/s/files/1/0433/5108/1118/files/compliance_officer_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nagexonulelaxefirulilona.pdf
    • https://cdn.shopify.com/s/files/1/0452/5703/1842/files/88844425654.pdf
    • https://cdn.shopify.com/s/files/1/0431/0505/8976/files/kenaxujakikofi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7865/4883/files/kazepigiwat.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/97784834444.pdf
    • https://cdn.shopify.com/s/files/1/0431/4130/0380/files/brown_bear_brown_bear_activities.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_off00005f8d.bin
1efb8bb9c909afee514e36ef6ba5ad766a98806c386d7e2c6c5f0fb8c044dbf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8D 5056 bytes
font_01_sfnt_off000070d9.bin
6173f9233cd645bc2b335c94c27e99289897685da53dc463af5086bb3ed52a3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D9 10172 bytes

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