Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2a1adf534668c53…

MALICIOUS

PDF

74.1 KB Created: 2021-03-16 19:45:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0534aaeeb9260c8bc789ccd98b160882 SHA-1: 27fa2e6c87ff76923a4073c16768a26ec3c96440 SHA-256: b2a1adf534668c5349aaf03a516b2a0f16010af9a8d227c5a954853054bbf050
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dugedepap.ru/strik?utm_term=can+you+create+a+table+of+contents+in+word PDF link annotation
    • https://cdn.sqhk.co/dozelodet/gbuhis1/40840190115.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460447/normal_603df1df40976.pdfIn PDF document text
    • https://cdn.sqhk.co/bexamajuw/dgUjdha/65468232474.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446507/normal_5fd8083e50c18.pdfIn PDF document text
    • http://govakokes.22web.org/backstage_pass_template_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419820/normal_5feb0e32186f8.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/YicxB2l/gobaruw.pdfIn PDF document text
    • http://radapox.iblogger.org/income_tax_amendment_ordinance_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445544/normal_5fd1204053990.pdfIn PDF document text
    • http://mebovedu.getenjoyment.net/past_simple_vs_present_perfect_exercises_intermediate_level.pdfIn PDF document text
    • http://maporirunigis.22web.org/99857369570.pdfIn PDF document text
    • http://xafesuvorolivig.scienceontheweb.net/divig.pdfIn PDF document text
    • https://cdn.sqhk.co/fotajoge/5jcG0ib/rescue_mission_syracuse_ny_phone_number.pdfIn PDF document text
    • http://vegixojarek.iblogger.org/james_baldwin_the_fire_next_time.pdfIn PDF document text
    • https://cdn.sqhk.co/bebomopakax/ar471ie/pocket_door_kitchen.pdfIn PDF document text
    • https://cdn.sqhk.co/kizulajeli/t9wjayy/arcformhoz_ill_haj.pdfIn PDF document text
    • https://cdn.sqhk.co/dijabidasu/PibickD/best_streamlabs_obs_settings_mac.pdfIn PDF document text
    • http://faketikus.22web.org/gopakofenexetokatek.pdfIn PDF document text
    • http://jufumabenosenup.iblogger.org/92493019286.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kovusipeduza.epizy.com/android_push_notification_example_in_android_studio.pdfIn PDF document text
    • http://pugafezozanuw.epizy.com/virimubepakamo.pdfIn PDF document text
    • http://desuvusemexemob.epizy.com/attendance_tracker_template.pdfIn PDF document text
    • http://kezosofudan.rf.gd/59200014546.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_off0000e596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE596 5252 bytes
SHA-256: 9c8a06ed044c8b7fbe436df2ccd42fcae0e703f00ec98bb64447eb2073a01698
font_01_sfnt_off0000f797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF797 10576 bytes
SHA-256: 5bc1c8c09f0abb5d36eb35deb6e95cdfebe432635f62b3c8013cbd022207a867

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