Malicious PDF — malware analysis report

Static analysis result for SHA-256 89cb27853d381d8d…

MALICIOUS

PDF

44.7 KB Created: 2020-07-31 02:11:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f3309d13a54564afe29296deea905bd SHA-1: 0c3f8ed12f499277ea1bcffde9da78c7ed79fed1 SHA-256: 89cb27853d381d8d763b6e325d7284fcd305d0c06eef409aef68dc88dc52155c
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.com'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, indicating a high likelihood of phishing or malware delivery. The 'PDF_SEO_LINK_FARM' heuristic further suggests a pattern of distributing links, with 'cdn.shopify.com/s/files/1/0439/3828/3678/files/jobasosakunoviwekis.pdf' being one of many such links.

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.com/pify?keyword=facial+muscles+anatomy+pdf
    • http://files.moremilestogo.com/uploads/1/3/1/0/131071063/kurotovovisonevaneb.pdf
    • http://files.economiczhang.com/uploads/1/3/0/9/130969045/sudutifijukego.pdf
    • http://files.karlyperez.com/uploads/1/3/0/8/130814714/puvesu-dilakinenisam-maxajake.pdf
    • http://files.economiczhang.com/uploads/1/3/
    • https://cdn.shopify.com/s/files/1/0439/3828/3678/files/jobasosakunoviwekis.pdf
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/27442599784.pdf
    • https://cdn.shopify.com/s/files/1/0434/3349/2641/files/98170182543.pdf
    • https://cdn.shopify.com/s/files/1/0435/8517/5713/files/bezuxosisekogedo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3050/3843/files/doxetunazopeguxulizun.pdf
    • https://cdn.shopify.com/s/files/1/0430/8048/2967/files/60065510057.pdf
    • https://cdn.shopify.com/s/files/1/0434/5040/0928/files/9359333208.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/16219475651.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/xoxinepojutipuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.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_off00007274.bin
d57f1366bea39bc6d731c696a5bc59551bbac2c77fd8b47fec60a9e8f6fda7b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7274 5144 bytes
font_01_sfnt_off000083ef.bin
0793741e1bc5eae9ff06930c6cd68786b30d1cfca8128f4bb2e2521dd92e168e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83EF 10312 bytes

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