Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4eb602d4400b516…

MALICIOUS

PDF

82.6 KB Created: 2021-04-05 20:07:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6f2d60eb9430e31d1a9df6bf530da80 SHA-1: b736148579611c5a873b3967110d18d4d0e09a3d SHA-256: c4eb602d4400b516ef8cab9e4a5218355f3d6e8268bf9bdbc5d6a48fdbe238bf
96 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that impersonates a school transcript, likely to trick the user into visiting a malicious site. The presence of PDF_URI and EMBEDDED_URL heuristics further supports this phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/wix?keyword=nile+c+kinnick+high+school+transcript
    • https://cdn-cms.f-static.net/uploads/4462059/normal_606a430f649ab.pdf
    • https://toviwapomini.weebly.com/uploads/1/3/4/7/134727984/wodewajig.pdf
    • https://cdn.sqhk.co/luwesefizi/jcj0hhl/discord_apex_legends_for_pc.pdf
    • https://tifomuzaki.weebly.com/uploads/1/3/1/1/131163977/wiwiw.pdf
    • https://static.s123-cdn-static.com/uploads/4386852/normal_60015da66d1a2.pdf
    • https://fojevuresuzuj.weebly.com/uploads/1/3/4/8/134881640/vusij_mikitu_komow.pdf
    • https://cdn-cms.f-static.net/uploads/4501659/normal_6049165d92ab9.pdf
    • http://fuluwube.22web.org/stronger_kelly_clarkson_sheet_music.pdf
    • https://cdn-cms.f-static.net/uploads/4393499/normal_6051742f3dda2.pdf
    • https://static.s123-cdn-static.com/uploads/4470535/normal_5ffaccf49c85c.pdf
    • https://voloripilobolim.weebly.com/uploads/1/3/4/6/134635915/tadaf-jifojad-lozenili-suradurizatobib.pdf
    • https://jewefero.weebly.com/uploads/1/3/1/3/131383264/584d777f3e057da.pdf
    • https://cdn.sqhk.co/rawegili/Agcaiat/93343684972.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fipinajamidab.epizy.com/bawonegidadejepadikewo.pdf
    • https://s3.amazonaws.com/rurosaveruk/90463506415.pdf
    • https://s3.amazonaws.com/dewutexorob/rowenta_pro_iron_steam_station_problems.pdf
    • http://pidezesu.rf.gd/24223558526.pdf
    • https://s3.amazonaws.com/pubopelej/2007_jeep_grand_cherokee_wont_start_just_clicks.pdf
    • http://dufosulux.epizy.com/ankylose_definition.pdf
    • http://pidejejorojomon.epizy.com/microbial_virulence_factors.pdf
    • https://s3.amazonaws.com/rebesudanolo/aspiracion_de_secreciones_traqueostomia.pdf
    • https://s3.amazonaws.com/muvarelo/the_man_in_the_high_castle_season_2_episode_4_wiki.pdf
    • http://jizokotasaz.rf.gd/5622058950.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f64f.bin
1137684219c30f27f94339eb419edde8f7464cb5e1b52028d9e8e136ab9aa78c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF64F 5016 bytes
font_01_sfnt_off00010750.bin
3d3516b811344e186358a8f2c4249773ac8c5c8aff2dcdc6722c8a611f4aae26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10750 11660 bytes
font_02_sfnt_off00012e85.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E85 4324 bytes

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