Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e1a928fbfe00dd…

MALICIOUS

PDF

96.5 KB Created: 2021-03-03 19:20:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a9a6404c788362732d0710822248e34e SHA-1: c6f319487a0ff992bca0890f995d2482a8196b27 SHA-256: f6e1a928fbfe00dd541641e30c05bf8e1d74e2ab5c11053c48f56c528f310f68
104 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 lure for downloading a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though truncated and obfuscated, suggests a pretext of providing educational material to trick the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lozipotod.ru/wb?keyword=mcgraw%20hill%20science%20grade%207%20online%20textbook%20answer%20key PDF link annotation
    • http://xabotijal.iblogger.org/xovisotitawagiris.pdfIn PDF document text
    • http://powerhdniy.space/6334024962654d07.pdfIn PDF document text
    • http://fefujikaviw.22web.org/80007852655.pdfIn PDF document text
    • https://cdn.sqhk.co/fekerepusa/rid60lY/the_last_stand_2_roblox.pdfIn PDF document text
    • http://uggi-ugg.com/google_search_bar_on_home_screen_not_workingnq80e.pdfIn PDF document text
    • https://cdn.sqhk.co/vurikede/cUAPgfR/28923083820.pdfIn PDF document text
    • http://zobebukore.22web.org/here_comes_the_bride_sign_template.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://molulig.epizy.com/moviescounter_hollywood_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/rekoxozutopi.pdfIn PDF document text
    • http://dujikiwereka.epizy.com/78407106019.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/simple_addition_worksheets_for_kindergarten_with_pictures.pdfIn PDF document text
    • http://gebibem.epizy.com/fosotovarewuwu.pdfIn PDF document text
    • http://jonufinufezo.epizy.com/pivuxor.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/roblox_clown_kidnap_command.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/6942657528.pdfIn PDF document text
    • http://fusizizugunu.epizy.com/nedoweruwokar.pdfIn PDF document text
    • http://tabikobi.epizy.com/bobikufaj.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D33 5752 bytes
SHA-256: 5ba46e1086256edb7d1500e808f6f6555436f885502294386e54c32f92f970b5
font_01_sfnt_off000130ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130ED 14812 bytes
SHA-256: d72a4b7caa982d7f6325cd4cd99a9bec41b2760fe45b0ca0921dbacdf27ddd9a
font_02_sfnt_off00015ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EF6 16132 bytes
SHA-256: 2def80ee9cf871b89fa1821d83521187f92649b88f41053709a5a2c79b3e7c85

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