Malicious PDF — malware analysis report

Static analysis result for SHA-256 784b3bf3611a299c…

MALICIOUS

PDF

72.7 KB Created: 2020-12-28 19:44:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 356dc45854e4131ca6fb1a1237c77337 SHA-1: 6584410cf16841074176055594dda84286f727f9 SHA-256: 784b3bf3611a299c5632812d1a1a12adda5d533abba1913b4917dd4edd1c4af7
234 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a ClickFix paste-and-run lure and a clipboard-command (paste-and-run) lure. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://ggtraff.ru/strik?utm_term=restart+hp+laptop+in+safe+mode In PDF document text
    • https://cdn.sqhk.co/jiwejujorod/Rghihif/zatinuvofibomuwagewapu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407986/normal_5f9895ca78140.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404750/normal_5fd332833e3a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459922/normal_5fbc7c299a969.pdfIn PDF document text
    • https://cdn.sqhk.co/bumigorawi/R3NhMcG/download_game_talking_tom_jetski_2_mod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415291/normal_5f962cf9230d6.pdfIn PDF document text
    • https://cdn.sqhk.co/zupodejadofe/Iiejeii/toca_life_pets_1._0._1_download_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kegetaxob/5NFOheN/fifabazafobi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f872a61225bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366327/normal_5f9cb52cc20cf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/23eac6c5-7c50-471c-bbf5-42227e1530f2/fruit_candy_bomb_cheat.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/groundwater_modelling_guidelines_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/wemegiwuverujalugapu.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7A 5288 bytes
SHA-256: 2c7ffec9b20741500639f7b9a4d4dfcd480f0c65d7e804870a972fa948e5f43b
font_01_sfnt_off0000f04e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF04E 11112 bytes
SHA-256: 1b11faba3a2afdfe25bc0fa2c755154a35f1751760c958962450331653e56f7d

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