Malicious PDF — malware analysis report

Static analysis result for SHA-256 091d6d64031a83f6…

MALICIOUS

PDF

74.2 KB Created: 2021-02-20 04:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 3bb6f7496e7ea2f7710dc321b078e2ed SHA-1: 502ecf1065cee0df592f09bbdcc7e8f8cdde832d SHA-256: 091d6d64031a83f68423970aed909125d5d0772989c615ea9b23d74d747d4a6a
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, identified as a phishing attempt. The ClamAV detection and ML classifier further support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick the user into visiting a malicious site, likely for credential harvesting or further malware delivery.

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
  • 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/123?utm_term=rinnai+water+heater+rl75+manual In PDF document text
    • https://cdn.sqhk.co/vaxarogajib/jfumgjr/primal_carnage_onslaught.pdfIn PDF document text
    • https://cdn.sqhk.co/pavetikedur/hhiahbe/burger_big_fernand_recette.pdfIn PDF document text
    • https://cdn.sqhk.co/bovutolomevo/ihPLidl/directions_to_777_casino_drive_cherokee_nc.pdfIn PDF document text
    • https://cdn.sqhk.co/wadupaxi/f9ujcK3/3d_pinball_space_cadet_cheats.pdfIn PDF document text
    • http://kudopifupelixi.22web.org/fortigate_firewall_600c_configuration_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/sarowojep/1ihRHgd/sesazejowomedoba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458633/normal_600c7df222208.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410986/normal_6016a86856757.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/ieihiey/war_of_the_visions_ffbe_vip_mod.pdfIn PDF document text
    • http://foruzakitotilut.iblogger.org/3._nitro_to_word_online.pdfIn PDF document text
    • https://cdn.sqhk.co/wisisatofife/eAhhgjg/download_offroad_outlaws_mod_apk_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/rapurakoke/rjcjSfK/crazy_zombies_9.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/eifLieN/xozidulogidikukixov.pdfIn PDF document text
    • https://cdn.sqhk.co/noxibogalu/jg9L0XU/line_graph_color_ggplot2.pdfIn PDF document text
    • https://cdn.sqhk.co/bejazerorod/8gihlie/world_war_2_military_records_new_zealand.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sawutekoxa.epizy.com/92992143858.pdfIn PDF document text
    • http://ligexaxo.epizy.com/30129345646.pdfIn PDF document text
    • http://jafimogapevov.rf.gd/zasofolebes.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_off0000e687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE687 5052 bytes
SHA-256: fb79830da2e434692d498a923719bb0eda29a040c9e6d90eb8c7904b93a912ca
font_01_sfnt_off0000f7af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AF 10396 bytes
SHA-256: 2da32391bf00f0a8d30d056527c610e3086198cbe51f49accbc90140881bd1f5

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