Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e06d18a60cb53f…

MALICIOUS

PDF

73.2 KB Created: 2021-05-03 07:04:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53d793b9a762d31d9a29ef075981b613 SHA-1: d1f58430a8136dfc39020240516fff2d1f0e3ce6 SHA-256: d9e06d18a60cb53f0eb43fa67494fa61c748d697072ab28c51560dd121811690
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or malware distribution.

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://kuzutuzo.ru/strik?utm_term=medical+terminology+simplified+5th+edition
    • https://pejijogukuto.weebly.com/uploads/1/3/4/7/134768892/9570203.pdf
    • http://lesagotefawa.22web.org/vw_app_connect_android_version.pdf
    • https://static.s123-cdn-static.com/uploads/4365660/normal_60026b2b715d4.pdf
    • https://cdn-cms.f-static.net/uploads/4381988/normal_605adc17eb55f.pdf
    • https://lepepapiminokuj.weebly.com/uploads/1/3/4/4/134493398/3959ec452d234.pdf
    • https://tokoposejod.weebly.com/uploads/1/3/1/3/131380771/gerokudemedevi.pdf
    • https://static.s123-cdn-static.com/uploads/4380858/normal_60006ade2accf.pdf
    • https://cdn-cms.f-static.net/uploads/4412996/normal_6013a2914108d.pdf
    • http://paxebuli.iblogger.org/ipad_annotation_app.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://xedojezu.rf.gd/pozetokorinup.pdf
    • https://uploads.strikinglycdn.com/files/500a4ddd-d46d-4a41-b795-c94ca8827753/lesco_spreader_deflector_kit.pdf
    • https://aed0ee3a-d217-4696-a563-de9ff15d6c37.filesusr.com/ugd/f80e3f_2724680a19c544378a9239364707f79b.pdf?index=true
    • http://kenuzuwemonuda.epizy.com/income_tax_rates_ay_2020_13.pdf
    • https://uploads.strikinglycdn.com/files/27239406-34b1-4cad-9d17-d87d9fc268cf/what_age_is_how_do_you_eat_fried_worms_appropriate_for.pdf
    • https://uploads.strikinglycdn.com/files/cda7fc9b-c7ba-49fe-85e5-7b3ae6216cbe/liponulab.pdf
    • http://tuwogujizurez.epizy.com/tubimulokexob.pdf
    • http://pepiretivixu.epizy.com/bohemian_rhapsody_sheet_music_scribd.pdf
    • http://bisiziwaros.epizy.com/nice_guidelines_pneumonia_pediatrics.pdf
    • http://zopiwirikidow.rf.gd/livuloliwat.pdf
    • https://uploads.strikinglycdn.com/files/89bc0a63-4c72-477f-b4bc-17f585d390b6/what_is_the_difference_between_the_warrior_diet_and_omad.pdf
    • https://d89a15f7-21b5-45f0-b9b4-bc5b7be68842.filesusr.com/ugd/18e821_c9f8d1a4d8f6446f9e4372105aaef9c0.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b8e0ed40-e1d4-401b-82e5-2cc6f300a4e8/breadman_bread_machine_manual_tr2200c.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d39d.bin
5df6f2cfae384fef68cda88cde3864f13a5dfa5f5c13838afe0307182f0869d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD39D 5588 bytes
font_01_sfnt_off0000e67b.bin
7c74c331c1d6f54499cd5b619a2e0f37f0053b6b8608a853d40a6015b38757cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE67B 10064 bytes
font_02_sfnt_off000108f8.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108F8 4324 bytes

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