Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dc006a32633a2d3…

MALICIOUS

PDF

89.4 KB Created: 2021-03-24 21:38:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 16b51dabf7cd7b388486a3875ff41f58 SHA-1: 97dd80217c9fec113c23f0042727e46e0235d31f SHA-256: 0dc006a32633a2d39827a25aad9c1506c4a4a98406bceac7daa2e3a29c37c988
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/wix?keyword=theory+and+design+for+mechanical+measurements+5th+solution+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/pevedapev/eih4gdF/dilotizetizotaf.pdfIn PDF document text
    • http://rezumitisud.mygamesonline.org/how_to_name_covalent_compounds_with_three_elements.pdfIn PDF document text
    • http://detodefinedex.22web.org/indonesia_flag_hd_wallpaper.pdfIn PDF document text
    • http://sweetygirl.club/784832421452vyxu.pdfIn PDF document text
    • http://jixazepo.mywebcommunity.org/traxxas_tqi_transmitter_reset.pdfIn PDF document text
    • http://bitcoinlearningcentre.online/rugukesupixuboxafinowe680xn.pdfIn PDF document text
    • https://cdn.sqhk.co/baxafapunubi/dNXIVgc/hipaa_guidelines_for_employees.pdfIn PDF document text
    • http://rasezatoxefu.mygamesonline.org/vetepesokero.pdfIn PDF document text
    • http://makamar.xyz/where_can_i_get_the_after_booksk0b9y.pdfIn PDF document text
    • http://7lessons.website/varifogakulilibamenip88z0c.pdfIn PDF document text
    • http://zavulibalox.mypressonline.com/vofavezodurule.pdfIn PDF document text
    • http://fb-ig-copyright.com/rosary_prayer_bookletp0ud7.pdfIn PDF document text
    • http://i12tws.website/rupinder_gandhi_1_movie_song08osa.pdfIn PDF document text
    • http://sun-italy.space/tikarolanajixeju9opzg.pdfIn PDF document text
    • http://faceskinagainbeauty.xyz/32404967132o145r.pdfIn PDF document text
    • https://cdn.sqhk.co/dibidoretu/fohcugi/jobakevuzupezasaropovijug.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/famesexavenasefusi.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/aiiuAii/lara_croft_relic_run_mod_apk_rexdl._com.pdfIn PDF document text
    • http://runaxok.iblogger.org/kopolede.pdfIn PDF document text
    • https://cdn.sqhk.co/loboremetoxe/d06dhj6/the_planets_solar_system_song_pancake_manor.pdfIn PDF document text
    • http://gaduvokine.iblogger.org/hunter_fan_remote_will_not_turn_on_light.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xilagerezob.epizy.com/16055419412.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0A 5744 bytes
SHA-256: a81ff1478aeac94025c4e9e9409df07a96463c9c6d2471f6d3da2dabd61c258f
font_01_sfnt_off00010d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D7E 11992 bytes
SHA-256: d3678dc0e0ff2d8aee715c37bc0a375ad90f7ec0ba19f8be9c051a8f99a8b77e
font_02_sfnt_off000135ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135FF 20100 bytes
SHA-256: 54790e2ad63e7772bdab7943bd8626249346c26fb82bd34327c8a6e18f632eab

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