Malicious PDF — malware analysis report

Static analysis result for SHA-256 f194dd7f06c03e81…

MALICIOUS

PDF

75.5 KB Created: 2021-01-25 19:54:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: e6bad4581335198c46c974bbf8147638 SHA-1: 91a91f8d0701f26495f73798a3d73eb0d02332ec SHA-256: f194dd7f06c03e8193362a649043cf82eb14f9c79765451d5d1650bf9ada8bfb
96 Risk Score

Malware Insights

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

The PDF contains embedded URLs and is flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, contains references to 'Age of Empires 2 expansion' and 'wkhtmltopdf', suggesting a lure to a malicious site. The presence of external URIs indicates an attempt to redirect the user to a potentially harmful domain.

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
  • 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/aws?utm_term=age+of+empires+2+expansion PDF link annotation
    • http://datingdate.site/71687051956anfih.pdfIn PDF document text
    • http://nuvuzujujafusu.22web.org/91678240661.pdfIn PDF document text
    • http://vannlight.ru/11238316772gay2j.pdfIn PDF document text
    • http://telewapor.22web.org/750599931.pdfIn PDF document text
    • https://cdn.sqhk.co/remavaveso/9ghjcib/nissan_cube_dash_removal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388825/normal_5fcedd7f0d040.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450514/normal_60033e8ea37ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388819/normal_60002e118e4b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496824/normal_5fd78894a8b09.pdfIn PDF document text
    • http://testertumentum.space/scenario_planning_processnbd2b.pdfIn PDF document text
    • http://detobusukited.iblogger.org/latest_version_of_whatsapp_for_iphone.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/zarusegibitumet/angular_6_declare_variable_in_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/the_butterfly_effect_2_english_subtitles.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/thiamine_catalyzed_benzoin_condensation_lab_report.pdfIn PDF document text
    • http://dimaninerif.rf.gd/python_3._6._5_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/twitter_old_version_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/36569216330.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/zazapikuninivapenulexiv.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/90879022585.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_off0000ea34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA34 5376 bytes
SHA-256: 2bec647bf7dc974ff5a7d195a6057c44d5858dde03aa64ec1a5479fbfea80002
font_01_sfnt_off0000fc75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC75 10800 bytes
SHA-256: fd29a2fe1364a5517e15ee704bf041a3fd7f64130cc195128027e341388269e6

Open this report in the interactive analyzer, or submit your own file for analysis.