Malicious PDF — malware analysis report

Static analysis result for SHA-256 3515d43dff612ab6…

MALICIOUS

PDF

101.0 KB Created: 2021-02-24 03:55:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 4ac5d519260ea0bbb49b5ae9ace5afcf SHA-1: f302d86ffc98fad2736d50e523b1a18ea999ec07 SHA-256: 3515d43dff612ab60b9fb87c55f1e4fc2d2f268d8647470dff944cdaa664b12c
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, suggests a lure related to Photoshop tutorials. The ML classifier and ClamAV detection strongly support the malicious verdict. While no scripts were directly extracted, the PDF structure and embedded malicious URL are sufficient indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://yafferge.ru/strik?utm_term=jawaban+how+to+operate+photoshop+tutorial+for+beginners+bahasa+inggris In PDF document text
    • http://nafugelinev.iblogger.org/navigateur_web_leger_android.pdfIn PDF document text
    • https://bununijadepijag.weebly.com/uploads/1/3/5/2/135298825/namobexamuzoxap_lumotoxarel_jolefo.pdfIn PDF document text
    • https://nililekekikare.weebly.com/uploads/1/3/0/7/130739967/7c0102645e0c9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457868/normal_5fd7954332cf5.pdfIn PDF document text
    • https://mapobosani.weebly.com/uploads/1/3/4/3/134385232/3c3967b75cd245.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bidilud.rf.gd/acetato_de_calcio_bula.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/kakoze.pdfIn PDF document text
    • http://fatebem.epizy.com/aristotle_poetics_summary_gradesaver.pdfIn PDF document text
    • http://ropiviteginu.rf.gd/proses_terjadinya_aterosklerosis.pdfIn PDF document text
    • http://jowesokawebape.epizy.com/toguxujulanatofe.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/rutupifek.pdfIn PDF document text
    • http://vemevusakeke.epizy.com/80563828528.pdfIn PDF document text
    • http://putesedesupelo.epizy.com/negasud.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/brainly_answer_website.pdfIn PDF document text
    • http://zivakafipudejiw.epizy.com/rarogebonesax.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/sotusomus.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_off000148ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148AD 5384 bytes
SHA-256: 355efaa0afd9f5c8e5def110fbbecedc23b6bfe7456fe2c2d2e3207e90e22769
font_01_sfnt_off00015b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B0B 12580 bytes
SHA-256: e33516edb9e59a3148206a7c52ec7ee0d1ae19cc51797cd3f2ee95cdb904f9a3

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