Malicious PDF — malware analysis report

Static analysis result for SHA-256 e48afeec4c1a2498…

MALICIOUS

PDF

70.0 KB Created: 2021-02-25 07:27:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a5c3d608d1fa70b5610c6355acf1cd82 SHA-1: 5fdd67a7932b055e86f60e3b1ac57503b960d241 SHA-256: e48afeec4c1a24988830dee127dfba78f97a0d001767fb2a535fe5f29c5e1b5b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://druttle.ru/strik?utm_term=fear+of+colours+phobias+band PDF link annotation
    • http://nemosixumeki.mypressonline.com/dulimuwawe.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/why_do_smoke_alarms_go_off_in_middle_of_night.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464877/normal_600e5c35e0b65.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/19632016635.pdfIn PDF document text
    • http://roxelejabojafe.scienceontheweb.net/jivotosibigob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369512/normal_6002d06dc5268.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409606/normal_60003c8d98e0b.pdfIn PDF document text
    • http://figimumagoko.mygamesonline.org/easy_tablet_weaving_patterns.pdfIn PDF document text
    • http://roxelejabojafe.scienceontheweb.net/pijin.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/lizuseguwix/85801002337.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/98522213391.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/tepusefiramugazoragaraxas.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/88099698613.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/54422677900.pdfIn PDF document text
    • http://gafodix.myartsonline.com/jisululotagituj.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_off0000d81d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD81D 5340 bytes
SHA-256: 5929e85b3700b8b5114d143fb42583cc2abff3c289316c6f7ccf3ac31e653756
font_01_sfnt_off0000ea3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3A 9740 bytes
SHA-256: 16afb11d88e7d8c678a5c0fdc15e7d620f902def427b245d0941d08c4fa1fa3e

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