Malicious PDF — malware analysis report

Static analysis result for SHA-256 675a609e843fcd0a…

MALICIOUS

PDF

78.5 KB Created: 2021-05-19 01:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4649bfbeb7dc7b651d30882799f5e855 SHA-1: b0b6921bd9257c11dfbdb3cde4c7799c45b8de86 SHA-256: 675a609e843fcd0a3bd6f3370e4ebf69935989be231931b30c7514806126d598
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://zajinet.ru/strik?utm_term=how+to+get+a+job+at+baskin+robbins+at+14 PDF link annotation
    • https://dojixevagix.weebly.com/uploads/1/3/2/6/132682303/695cfe4daced6.pdfIn PDF document text
    • https://mubonunegaj.weebly.com/uploads/1/3/0/8/130874179/5e3bcaed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481515/normal_5ff931e906bd7.pdfIn PDF document text
    • http://falopeliti.22web.org/86135813696.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369769/normal_604ec97e902b1.pdfIn PDF document text
    • https://padukasafif.weebly.com/uploads/1/3/4/4/134404544/vatowibeni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485942/normal_603751b9eb669.pdfIn PDF document text
    • https://jubagimijan.weebly.com/uploads/1/3/5/3/135333733/guvekixijotu-dated-lexeko-zolawasobi.pdfIn PDF document text
    • https://rajexomogalifi.weebly.com/uploads/1/3/4/8/134891851/nonutufodesoja_vanebebezevamu_wunok_sijeder.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/puretulenuza/types_of_attachment_styles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a929922-2c4e-4038-b110-9be0848b0cec/nupesaboripogisaxulirule.pdfIn PDF document text
    • http://bagasukozu.rf.gd/xifepasewakuwuzupuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a174b9c-2eca-4a9d-8513-b9c2c59d5a4a/71649730093.pdfIn PDF document text
    • http://gugamofizuxeg.epizy.com/pifevamowodezinivef.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/guidelines_for_management_of_gallbladder_polyps.pdfIn PDF document text
    • http://debarunuzijabe.rf.gd/juwujedabanudusijire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03899f1e-e5d2-411d-ade2-c056ed6bc6fa/asus_ipibl-lb_motherboard_drivers.pdfIn PDF document text
    • https://s3.amazonaws.com/musokejixami/periodic_table_worksheet_chemistry_if8766_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/free_spiderman_invitation_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/cuisinart_dlc-2011chby_prep_11_plus_11-cup_food_processor.pdfIn PDF document text
    • http://moborudazijom.epizy.com/21466307720.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_off0000f310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF310 5296 bytes
SHA-256: 779337f42910ff4a8447836a42d3b8c5cfe428e702bd8f658003be7af06bdfc0
font_01_sfnt_off00010546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10546 11812 bytes
SHA-256: 2b28e0acde7eac4793b566eb5f25a49a76afa0d51ef176aee8fe1f94f5be7506