Malicious PDF — malware analysis report

Static analysis result for SHA-256 379da14313a9226e…

MALICIOUS

PDF

69.6 KB Created: 2020-12-25 00:32:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: a9259a1563384372a85d2121e015d4d3 SHA-1: a190817dde13766b67bada626fdea17904baa25f SHA-256: 379da14313a9226ea1b248b99220abb362a57dc8699e3ce3d36f7ad3b0d206c9
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to account management or financial instructions, aligning with a payment redirection scam. The presence of numerous external links and a critical ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://traffmen.ru/strik?utm_term=multiple+accounts+on+same+switch+animal+crossing In PDF document text
    • https://cdn.sqhk.co/lizupasepafu/JjfIVnW/nusotuxodejonimaxup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486060/normal_5fa974f1df7bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403282/normal_5fbc6544f1ab3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388613/normal_5f9a295fb51b8.pdfIn PDF document text
    • https://togimapobeno.weebly.com/uploads/1/3/4/6/134649298/e5f94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459477/normal_5fc032a4ac210.pdfIn PDF document text
    • https://cdn.sqhk.co/taduzotul/heSijia/dakebolanojajavek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465396/normal_5fb4cd1462801.pdfIn PDF document text
    • https://cdn.sqhk.co/fegujajox/pLhjOgg/wupugelirete.pdfIn PDF document text
    • https://karoxenerom.weebly.com/uploads/1/3/0/7/130739074/bajexifiginuvanavev.pdfIn PDF document text
    • https://cdn.sqhk.co/fegujajox/T16ggdN/57908537513.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410414/normal_5fde654882e8f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/vixitisaliletiruf.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/rajuxewaponosujavokajob.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/registration_form_html5_template.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BD 5444 bytes
SHA-256: eb0972ff5b47b1a2e2c1b99eeafac3bc5098a62b83e7d1df64d08301d278f054
font_01_sfnt_off0000e635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE635 10296 bytes
SHA-256: 2ad5d4a736c44dddf56ffda738d663e33f95651baeec4996e805bc43a49fd99c

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