Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c168cc51d9c862c…

MALICIOUS

PDF

86.0 KB Created: 2021-04-22 20:30:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd50b379d8f8846131aa4f87a7107883 SHA-1: b17c142c8d35913a4bf69654f49309d03ec696a2 SHA-256: 6c168cc51d9c862c65aaba8eda7c213101a7acc8afefbc60a5b61bff77892c07
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that appears to be part of a phishing lure, disguised as information about school start dates. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of multiple external URLs suggests the document is designed to redirect the user to potentially malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/strik?utm_term=hillsborough+county+public+school+start+date+2020
    • https://cdn.sqhk.co/zejizoguzut/hCqGidg/bawivofosanoberuluravata.pdf
    • https://cdn-cms.f-static.net/uploads/4410004/normal_6065db6898435.pdf
    • https://cdn.sqhk.co/lobinazema/8Spjcgf/download_nickname_generator_ff.pdf
    • https://rilulukopidu.weebly.com/uploads/1/3/5/3/135323077/gonepibemasisew-tepugoligim-bumikavetebov-fotura.pdf
    • http://peteferix.mypressonline.com/65818471622.pdf
    • http://tujidal.mypressonline.com/57671406689.pdf
    • http://vufiwopader.medianewsonline.com/vofig.pdf
    • https://cdn-cms.f-static.net/uploads/4410000/normal_603336b123bd2.pdf
    • https://lerexujirizafet.weebly.com/uploads/1/3/4/3/134344290/devajunemusumugunipe.pdf
    • https://static.s123-cdn-static.com/uploads/4418584/normal_5fee86ecdb5ff.pdf
    • https://cdn.sqhk.co/keliziniw/jQgjibH/letaf.pdf
    • https://fulitadu.weebly.com/uploads/1/3/4/8/134863398/1533702.pdf
    • https://cdn.sqhk.co/nujudemugipi/PNYNhcS/35857787474.pdf
    • https://cdn.sqhk.co/fomeluxilim/DkaDfjg/mokitobipukafunavawimi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/1c3db743-2ef8-4c94-8ed4-dd47571ee083/how_to_clean_uppababy_vista_rumble_seat.pdf
    • https://uploads.strikinglycdn.com/files/c42a2006-cecd-426b-915f-821240bbc282/konelamugu.pdf
    • https://7ce190f9-fb8d-496c-a51a-ce151dcc024a.filesusr.com/ugd/e72def_56cde6919ee94c6fa451d92228553974.pdf?index=true
    • https://uploads.strikinglycdn.com/files/ac5b1010-43e8-46cb-9daa-9a8e6dcda1f2/befemofarozowel.pdf
    • https://uploads.strikinglycdn.com/files/a7d6fc0f-612f-450e-b14d-302523c1ad24/76456048862.pdf
    • https://d6b7b3c7-8429-4d82-9d75-5d5d09e763cc.filesusr.com/ugd/a8c229_f635ea9c2e07420a928d8b36db0ca2c4.pdf?index=true
    • https://033f1a72-e514-447f-b44b-9d234b37386c.filesusr.com/ugd/f05202_a8a445aebc9c4a4cab1314f4f83614ec.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011056.bin
204ab5a791c2773e99e97dc9716f771e3d82b1532caad33787d6d9d0baff8fe9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11056 5812 bytes
font_01_sfnt_off00012417.bin
12e5a4edee7887a4e2cea488d701d925cb4479adc2be4dd678fa73e0984df1a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12417 11236 bytes

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