Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d1b52fc7369d3c8…

MALICIOUS

PDF

68.4 KB Created: 2021-03-19 01:03:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b43c1d9a21c82c76f4be663dc2506f79 SHA-1: 7f55177961068d03071c68c68f1c50a0481b8470 SHA-256: 4d1b52fc7369d3c80e1364a126eb7b6b36cfce66bc301066f451102b6f6499d0
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains keywords related to product pricing, suggesting a lure to a fake shopping or price comparison site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/strik?utm_term=samsung+nu7100+49+price+in+uae PDF link annotation
    • http://zofunubesosena.mypressonline.com/present_perfect_just_already_and_yet_exercises.pdfIn PDF document text
    • http://everydays.space/14593911720014g0.pdfIn PDF document text
    • http://forovasax.medianewsonline.com/43118033159.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417525/normal_603600dddf5e0.pdfIn PDF document text
    • http://gejesixave.scienceontheweb.net/microsoft_visual_c_2015_runtime_64_bit_download_windows_8.1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448347/normal_6033c39f82f7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454971/normal_5fcce24301b3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475564/normal_5fd67c6dd910f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368244/normal_601af83560336.pdfIn PDF document text
    • http://fafijitesulexiz.mygamesonline.org/siduvudumifekalitafasame.pdfIn PDF document text
    • http://sberbank.link/rejetogitomata7lg6.pdfIn PDF document text
    • http://airet.space/nezitinuilnsz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408704/normal_6046b2edd3bba.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/zoluwivebiro/18972554945.pdfIn PDF document text
    • https://d0a6b1b1-1773-4622-8b5e-0ab5990a7ed3.filesusr.com/ugd/b90ba1_cb7e3abdfbf44f1e977489a4642e2c7b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wetevali/685356283.pdfIn PDF document text
    • https://8bd0dbf5-62e0-4684-a95a-1d9666dfa34a.filesusr.com/ugd/e71694_4e423e2ad81b49b59b32d80f55e52cd9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/cover_letter_block_format_spacing.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/sears_craftsman_wet_dry_vac_replacement_vacuum_cleaner_filter.pdfIn PDF document text
    • https://4f65501f-cdae-4966-b9db-49b15ad9d196.filesusr.com/ugd/52b593_a03033a3c46c4288ac5be8b87721f5ce.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/liwafo/mefebefoval.pdfIn PDF document text
    • https://4e4301d6-cc9a-4939-960a-6b497c1efea6.filesusr.com/ugd/d78803_6dfc4fbbd0f644ce91d976f56267285a.pdf?index=trueIn PDF document text
    • http://sidepojedava.myartsonline.com/pegasus_faucets_parts_diagram.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_off0000cafe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAFE 5844 bytes
SHA-256: d957883ca222f83a7027e77b636865f1c3712fc9fdd0e1af4db47d458cb5a208
font_01_sfnt_off0000ded9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED9 10528 bytes
SHA-256: 67375266057885e107531033158c54d704670743d7daa69e8191e48bec0cb287

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