Malicious PDF — malware analysis report

Static analysis result for SHA-256 41e811535cedda3b…

MALICIOUS

PDF

73.9 KB Created: 2021-05-12 19:02:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5b110cace60abb34d45fc05b99c2e657 SHA-1: 722904b3b599beb32b5e89d83a9b43078e9dbdb1 SHA-256: 41e811535cedda3be9fdb55b401f169948356b943047490c84f5926bfb1afe49
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/strik?utm_term=to+my+dear+and+loving+husband+and+a+letter+to+her+husband+quizlet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451225/normal_6046339c3ad1e.pdfIn PDF document text
    • http://opsnatur.fun/josuvogapunizimirujuxl4xkr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416919/normal_604b8a0047ae6.pdfIn PDF document text
    • https://cdn.sqhk.co/xesofosirija/s9hihbf/best_speedometer_app_for_android_2018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374522/normal_6067867389def.pdfIn PDF document text
    • https://cdn.sqhk.co/sururezog/zidmwif/call_blocker_apk_android_10.pdfIn PDF document text
    • http://sport-stavki.fun/sojawejk81vi.pdfIn PDF document text
    • http://thelait.pro/mudofepifulowaabwem.pdfIn PDF document text
    • https://cdn.sqhk.co/luzigagoguna/jijbxif/lorik.pdfIn PDF document text
    • http://magnitoli-2ekran.site/gramatica_ingles_ejerciciostof0e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bojafazes/area_of_rectangle_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/jejifojewukis.pdfIn PDF document text
    • http://nubirenewukuz.rf.gd/43076840784.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/wufipanidapefipi.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/wekadukesizusufig.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/60681724186.pdfIn PDF document text
    • http://widamifikifewex.epizy.com/53198792114.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/pet_safe_wireless_fence_with_2_collars.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d77b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77B 5548 bytes
SHA-256: 5983848216d4b0769aa532947262e42456ce27eafc6f39444ac5839c96c48324
font_01_sfnt_off0000ea2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2C 9948 bytes
SHA-256: 18be9aa21882cc45cccf826fe11ec99e216d920355797fd5018bb6ce7d43a2dc
font_02_sfnt_off00010c3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3E 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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