Malicious PDF — malware analysis report

Static analysis result for SHA-256 bab769536f84873c…

MALICIOUS

PDF

95.5 KB Created: 2021-04-12 13:18:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: b200a52e14dae2cf45bb0fe3b5891ea6 SHA-1: 30cbdf7dd739e6be1a02aa9cb119913c7ba52621 SHA-256: bab769536f84873c6001de231a7bd29ce397df6b9162a31607541c40101d03a8
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to a game, further supporting a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • 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://druttle.ru/strik?utm_term=4+pics+1+word+level+227+answer+7+letters PDF link annotation
    • http://sufofure.mywebcommunity.org/broken_wings_kahlil_gibran_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wunasesev/Gies9Wk/lufafulizigojikok.pdfIn PDF document text
    • https://cdn.sqhk.co/sepexapubu/CK8CGgg/space_wallpaper_full_hd.pdfIn PDF document text
    • http://xunarepozufuz.mygamesonline.org/apache_cassandra_definitive_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/xosaletozobi/e0ghila/wuvonogunepebidanu.pdfIn PDF document text
    • https://cdn.sqhk.co/kizulajeli/jenghjd/59914690296.pdfIn PDF document text
    • https://cdn.sqhk.co/zabeluzitema/ciemhha/xutesokuwetunaruvofox.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/fezenur/gatonefatazesilisubiki.pdfIn PDF document text
    • http://zasugizej.epizy.com/vivis.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/majizeb.pdfIn PDF document text
    • http://nibemodida.myartsonline.com/wunixosase.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/hiragana_test_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/cattle_production_manual.pdfIn PDF document text
    • http://sasaxunofob.atwebpages.com/danumazifof.pdfIn PDF document text
    • http://kekunulu.epizy.com/free_index._php_template.pdfIn PDF document text
    • http://dorizoki.rf.gd/febikobogoxofixebotokeral.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/bee_movie_game_wii.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/kelanuvisabobelejifole.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/starring_role_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/readynas_nv_v2_maximum_disk_size.pdfIn PDF document text
    • http://leperipuf.rf.gd/90344518227.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/gegeporu.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_off00012016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12016 5476 bytes
SHA-256: d53e306f5164429b62289987b1ab98327357223617838ce8aa1700bfea764d17
font_01_sfnt_off000132ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132EA 11236 bytes
SHA-256: bcac9fe267a0d3a2f3a68fff24f9007509f56a160f73a3dbf3a22abd3e89898a
font_02_sfnt_off00015975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15975 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848

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