Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00e8f6495ce714d…

MALICIOUS

PDF

71.9 KB Created: 2021-03-04 06:36:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 8ce6d0088121ba01aae2a520f89e7328 SHA-1: 59ea8fe33b0a0fb3536c460fa3029c236199b61a SHA-256: d00e8f6495ce714dc54b10acdb90b9173af5aee0e3ace721eec16df33d54e54d
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://crophysi.ru/strik?utm_term=1943+farmall+h+value' is the primary indicator of malicious intent. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0', further supporting its malicious nature. The attack pattern is consistent with phishing or malware delivery via a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=1943+farmall+h+value In PDF document text
    • https://static.s123-cdn-static.com/uploads/4416319/normal_5fcc5b94eedc0.pdfIn PDF document text
    • https://garotilalu.weebly.com/uploads/1/3/0/7/130739336/8046c799ca.pdfIn PDF document text
    • http://fubikopelemom.mypressonline.com/is_my_drivers_license_suspended_in_michigan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424040/normal_6037a6eb86ed9.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/noximogiwunok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460063/normal_6000be5ab04cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471464/normal_5fcea5d060a1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424996/normal_602cdb98f1ba5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447267/normal_5fe9cb8739aca.pdfIn PDF document text
    • http://idealslim-ordina.site/types_of_chemical_reactions_worksheet_grade_101kxdu.pdfIn PDF document text
    • https://mabodezi.weebly.com/uploads/1/3/4/5/134590290/315d9eeb351.pdfIn PDF document text
    • http://nosilekexiwot.mywebcommunity.org/oster_french_door_countertop_oven_recipes.pdfIn PDF document text
    • http://ilkertr.shop/61132150997pnbvm.pdfIn PDF document text
    • https://lorajezaked.weebly.com/uploads/1/3/4/3/134367433/soxid_bupolixutafok_simozunex.pdfIn PDF document text
    • https://duvutotan.weebly.com/uploads/1/3/0/7/130775700/zetij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374379/normal_6003823fce383.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/lowrance_elite-7_ti2_met_active_imaging_3-in-1_transducer.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/jivamubug/letter_format_for_experience_certificate.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/wabawav.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_off0000da2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2D 5256 bytes
SHA-256: c23e4b21134cc1e25d1c48e46bcdd0d0d3c05abe086854bba15ab6e157152198
font_01_sfnt_off0000ebec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEC 11332 bytes
SHA-256: e8f20414ccef7e4de551ffe1c22325870746994946b09ff72a85174b4c6e1fdc

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