Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5da6b122a7a03a8…

MALICIOUS

PDF

76.8 KB Created: 2021-03-08 02:10:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36777053fb2944404bdb86b4d31bd99a SHA-1: e1bb210e1c67de92e788d6f13fbb32962ca9b1ad SHA-256: f5da6b122a7a03a81703a67b898b16d4aa3761c2a3425da8496c89bbaf98395d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search query for 'tarrant county felony warrant search', likely intended to deceive the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, with the embedded URL pointing to a phishing or malware distribution site. No scripts were extracted, but the PDF structure and URL are sufficient indicators of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/wix?keyword=tarrant+county+felony+warrant+search
    • https://zogazipo.weebly.com/uploads/1/3/2/3/132303407/fasemufazefeboz.pdf
    • https://static.s123-cdn-static.com/uploads/4476429/normal_6002ae4a29127.pdf
    • https://cdn-cms.f-static.net/uploads/4367632/normal_603dd7e41991c.pdf
    • https://vusutiti.weebly.com/uploads/1/3/4/7/134762674/tunisefutebododato.pdf
    • https://gedijidejejew.weebly.com/uploads/1/3/0/7/130775336/1d86dd5e8e82.pdf
    • https://static.s123-cdn-static.com/uploads/4471992/normal_600623fbc6a92.pdf
    • https://cdn-cms.f-static.net/uploads/4419194/normal_602cf40b6170e.pdf
    • https://cdn-cms.f-static.net/uploads/4501645/normal_600fd3df9e4bd.pdf
    • https://nobiramiw.weebly.com/uploads/1/3/4/4/134403563/kuxawobutupibawor.pdf
    • https://radefikifuru.weebly.com/uploads/1/3/4/7/134723330/36697.pdf
    • https://static.s123-cdn-static.com/uploads/4462985/normal_5ffe6d070d797.pdf
    • https://cdn-cms.f-static.net/uploads/4464083/normal_6030394a766cd.pdf
    • https://cdn-cms.f-static.net/uploads/4383565/normal_601c6495b4a5a.pdf
    • https://jedopebo.weebly.com/uploads/1/3/4/8/134889916/1073444.pdf
    • https://dokegofixak.weebly.com/uploads/1/3/0/8/130873830/naxabebuxaso_wovumud_nujer.pdf
    • https://nezuvaju.weebly.com/uploads/1/3/0/9/130969963/4545772.pdf
    • http://wuvubamunojiw.22web.org/sketchup_free_download_full_version_2018.pdf
    • https://ragulifogikub.weebly.com/uploads/1/3/3/9/133986704/9214064.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fuzaxexudiwa.rf.gd/28073294466.pdf
    • http://zibusawaf.epizy.com/30868957556.pdf
    • http://nexuvojof.epizy.com/11235491724.pdf
    • http://relimimukavewuj.rf.gd/fantaisie_impromptu_free_sheet_music.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f02c.bin
30db5d51b42f0f8a715b9acc1c25a505c60f16b0d62b411d2cc4a3b8adb03be5
pdf-font-stream PDF embedded font (sfnt) at offset 0xF02C 5112 bytes
font_01_sfnt_off000101a8.bin
9cb6139f688c9f2fe0cb912227ca5f6871eb92d6fbc4eb1bba400acacc912a78
pdf-font-stream PDF embedded font (sfnt) at offset 0x101A8 10564 bytes