Malicious PDF — malware analysis report

Static analysis result for SHA-256 29525ea89e8ba0af…

MALICIOUS

PDF

169.3 KB Created: 2021-02-24 12:45:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 332c874acd85785478b35269cd4330c8 SHA-1: 386e5b8b8526e37fbdb4dc866225e1ebd9a82dd0 SHA-256: 29525ea89e8ba0afd16b3cd643ed9e7f6974280c9be25ade44dcb55b05469ea4
96 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a phishing site. No scripts were extracted, but the presence of the malicious URL strongly suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jottigo.ru/strik?utm_term=us+army+air+corps+uniform+wwii PDF link annotation
    • https://cdn.sqhk.co/nuvuvidova/hohg7ib/79246419389.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/fijXZgf/chibi_anime_wolf_girl_drawing.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445890/normal_5fe4a31b7adc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392660/normal_602cd95c76336.pdfIn PDF document text
    • https://cdn.sqhk.co/nujidegowupi/SqjeJhc/boo_boo_bunny_pattern.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372354/normal_6008c266f3b9c.pdfIn PDF document text
    • http://kogegoleteneka.iblogger.org/disororovevikibupulizasi.pdfIn PDF document text
    • https://cdn.sqhk.co/rikopekela/mjj4Fib/komebikigobexalog.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/dozore/altice_one_manual.pdfIn PDF document text
    • http://mepefixo.epizy.com/tikiwoxesanu.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/gp_aram_guide.pdfIn PDF document text
    • http://xagugejubar.epizy.com/algebra_2_module_3_lesson_7.pdfIn PDF document text
    • http://karelovaluz.epizy.com/free_responsive_admin_template_bootstrap_3.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/periodicity_concept.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/jabifujaki.pdfIn PDF document text
    • http://gateguka.epizy.com/53282651481.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_off00025c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25C65 5312 bytes
SHA-256: 8afd33295575238fda3626ab499b1c27cb16684aedc0723cee47779a5d06ddc9
font_01_sfnt_off00026e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26E7D 11848 bytes
SHA-256: 23ba842fc72d1b38508a43336206fcaad9fa1f291dea12ce2e92cbadcf140a48

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