Malicious PDF — malware analysis report

Static analysis result for SHA-256 38a34888019359c7…

MALICIOUS

PDF

71.1 KB Created: 2021-02-20 00:53:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e405b05c6a9580fdd201dd3f7f1cf609 SHA-1: 7c33f1ce241860d79ad2a6f3669e1d5967e0844e SHA-256: 38a34888019359c7788b156ec7ee2bdeea36ec8fa6f8ab9937cf2404d8194d15
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, likely a phishing lure related to a vehicle service reminder. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

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://seumenha.ru/strik?utm_term=honda+civic+2012+service+due+soon+a123 PDF link annotation
    • https://cdn.sqhk.co/nosuterib/ja3hhgh/7571706208.pdfIn PDF document text
    • http://goldstein.capital/windows_server_2012_r2_download_iso_64_bit_microsoft6vuvh.pdfIn PDF document text
    • https://cdn.sqhk.co/jexerigix/jihdxd1/british_superbikes_2019_calendar.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxikotimux/f8Kjcha/bopoguv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501654/normal_600f50ceb19a1.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/QhdHJhb/coc_magic_clash_of_clans_hack.pdfIn PDF document text
    • http://raisinshq.club/3327371403aelw7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375891/normal_5ffc0ae824edf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403121/normal_6007d9966f26e.pdfIn PDF document text
    • http://freshmind.net/wezofebalafjnnps.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407994/normal_5fcd0858041e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412591/normal_5fd1749e0f0e3.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/musoxifuvitalo/nosunedor.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/navifebejinokidabenepedok.pdfIn PDF document text
    • http://sunivope.rf.gd/35171711488.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/87674610531.pdfIn PDF document text
    • http://mezezix.rf.gd/nuwifa.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/gtu_pmms_guideline.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/sozirowovilekaju.pdfIn PDF document text
    • http://kenuzuwemonuda.epizy.com/car_logo_quiz_ppt_free.pdfIn PDF document text
    • http://kugunimekuxaf.epizy.com/powuxexilitovino.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_off0000d91a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD91A 5412 bytes
SHA-256: 075792f0e5a1d54d192f843bd0d7523318bb078e691e034c682f2f74f2ff6c7e
font_01_sfnt_off0000eb95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB95 10424 bytes
SHA-256: 7d9f909344dc631613e01f12ec8723d4f01b4bc97e4e173934202d30c68a3951

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