Malicious PDF — malware analysis report

Static analysis result for SHA-256 80dceacbe12f5937…

MALICIOUS

PDF

83.1 KB Created: 2021-02-23 05:32:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: c92bdcd99ae09fbd1cd6da7e5cd99e4b SHA-1: e5b6e3f73e1cec177fae3350d0da11ef7e1b2b16 SHA-256: 80dceacbe12f5937abc2f2155a9a9f95a0eb0846236d737564993dfafc5eb0af
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, which is a strong indicator of phishing or malware delivery. The document body, though heavily obfuscated, appears to reference a Dell laptop, suggesting a lure to entice users to click the malicious link. The ML classifier and ClamAV detection further support the malicious nature of this file.

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://crophysi.ru/strik?utm_term=dell+latitude+e6540+size In PDF document text
    • http://kefets.xyz/32148942646es9bf.pdfIn PDF document text
    • http://rawenspant.online/kajafekuzakofanomefomelotgkfi.pdfIn PDF document text
    • http://amst-watch-v1.club/level_2_football_coaching_session_plan_templateq0non.pdfIn PDF document text
    • http://com-copyrighit.com/74673240614k9clk.pdfIn PDF document text
    • http://detonic-de.website/703379105018uc80.pdfIn PDF document text
    • http://shtampshop.ru/22871865351irlee.pdfIn PDF document text
    • http://zespodsvetkoy.site/ligazosi88jpl.pdfIn PDF document text
    • http://8gusevshop.website/giant_panda_running_speedgu5xl.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/vesubodufisi/romasefamowevemajana.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/a1278_keyboard_replacement_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/vapemodidoseloxobitexizer.pdfIn PDF document text
    • http://valamujunitun.epizy.com/73058042188.pdfIn PDF document text
    • http://faxanudof.epizy.com/10_eyewitness_news_reporters.pdfIn PDF document text
    • http://rasijubesu.epizy.com/2001_ski_doo_service_manual_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/double_integral_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/xusokasigosuvodadul.pdfIn PDF document text
    • http://sebubexegan.rf.gd/frozen_ii_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/64950225522.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/guided_by_your_grace.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_off000106ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106AE 5280 bytes
SHA-256: c46d982da77ea30cc76ec4f4b75c37c5ae5fb0fccaf7819e88c1f3233b841fdd
font_01_sfnt_off000118ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118CE 11236 bytes
SHA-256: 611808ef5b1c3485789ddb47a15049c8e50db5bb634548735a32c8f734aa1956

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