Malicious PDF — malware analysis report

Static analysis result for SHA-256 51abff55b4d7896f…

MALICIOUS

PDF

93.3 KB Created: 2021-04-14 06:28:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 210906fe6f39b825a47dadf540ebc742 SHA-1: 22a6fcb660c49d896f4cc42883568cfe9463caf4 SHA-256: 51abff55b4d7896ff56f13d001774a397138f5d444982b7cdb0998867e456127
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. 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 0.9992

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://zajinet.ru/strik?utm_term=la+casa+de+bernarda+alba+resumen+por+escenas PDF link annotation
    • http://help-lnstagram-verifycopyrgiht.com/blueparrott_b250-xt_instruction_manualp5y83.pdfIn PDF document text
    • http://balifruit.com/351630457606krl8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465392/normal_5fd65b8f454a3.pdfIn PDF document text
    • http://goldalbum.ru/how_to_change_ink_cartridge_for_brother_printerwtjf4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420019/normal_603bed987a724.pdfIn PDF document text
    • http://my-credit.info/66560854944npvmc.pdfIn PDF document text
    • http://mastera-saydinga.ru/gangster_bengali_movie_720pux5af.pdfIn PDF document text
    • http://ketadiets.site/motorola_bluetooth_headphones_s10_manualrwvgq.pdfIn PDF document text
    • http://insuranceautousa.com/98096496442lihjn.pdfIn PDF document text
    • http://jobware.pro/dragon_ball_raging_blast_2_cheats_xbox_360tfyyb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490523/normal_603fcfbe5e621.pdfIn PDF document text
    • http://yazansoft.com/mokixadomwx.pdfIn PDF document text
    • http://odebayitrafikhizmeti.com/79232888131u9bc1.pdfIn PDF document text
    • http://axecheat8.xyz/characteristics_of_bureaucratic_organizationpktue.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374983/normal_5fe500122c376.pdfIn PDF document text
    • http://makamar.tech/24442712274gjgva.pdfIn PDF document text
    • http://muzhskoizhurnal.ru/how_do_i_change_my_safety_first_ear_thermometer_from_celsius_to_fahrenheitahlht.pdfIn PDF document text
    • http://redirunna.xyz/oster_roaster_oven_recipes_turkey_breast1toa3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/71975cf9-e812-4aa4-8828-ecbed58a95dc/86023453001.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/mukajisobefifon.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/juzovotowatodosil.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/guvawisunakufodap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7375e6b0-6a70-49b7-b47f-22ad2ff365f5/raxododatixutixuzobaxamag.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/11597650325.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/glitter_felt_fabric_sheets.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012c9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C9F 5300 bytes
SHA-256: 6fee34763dab30088e357586f119c53589de5ada62b1352f3f9941ad64cb725f
font_01_sfnt_off00013e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E86 12048 bytes
SHA-256: d5f7318edb5e16ed1652d83445b744f49e862db45ef7fc2b37c4fa9e14a2f9c6

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