Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b77db92474f62a…

MALICIOUS

PDF

170.7 KB Created: 2021-03-29 19:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 157f7cd8d5f6c5b64e83015171afb9b4 SHA-1: 37e7fdd9f595a023b62ad2747654583e1d61900f SHA-256: 00b77db92474f62a5c8678d0d4e86ad2a8ed70235d03c02100eae0926544dfb3
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal or Forge Credentials

The PDF document was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a credential harvesting lure. It contains numerous links to disposable hosting, suggesting a link farm designed to obscure the ultimate malicious destination. The primary URL, https://mezovuduw.ru/wix?keyword=star+wars+kotor+apk+kickass, is likely part of the phishing infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://mezovuduw.ru/wix?keyword=star+wars+kotor+apk+kickass PDF link annotation
    • https://nopumalazaf.weebly.com/uploads/1/3/0/8/130813483/gujetifapetenij_kovizaza_jaxatagifotob.pdfIn PDF document text
    • http://pifedalune.medianewsonline.com/20281104951.pdfIn PDF document text
    • http://1xbet-football.fun/breville_toaster_oven_fan_not_workingx7rdk.pdfIn PDF document text
    • http://myvenza.ru/guidelines_helicobacter_pylori_eradication_2014yr9o0.pdfIn PDF document text
    • http://gatorama.space/nfl_schedule_week_12_picks9cdu7.pdfIn PDF document text
    • http://urott-hu.com/bidijukonasovaf74nsl.pdfIn PDF document text
    • http://kdghy.online/luzasisusajujebiwaxgmt2o.pdfIn PDF document text
    • https://pikoxujedogusu.weebly.com/uploads/1/3/4/6/134665618/9741015.pdfIn PDF document text
    • http://lnstagramsupportingcenter.com/assassins_creed_origins_anubis_armorbn2wx.pdfIn PDF document text
    • http://taforojujutusig.mygamesonline.org/kapunojemiw.pdfIn PDF document text
    • http://thecabinets.xyz/14547603394g5yy6.pdfIn PDF document text
    • http://kind-insta.site/ziferuraboxagowaladomicy7hd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jupegojut.atwebpages.com/76191299766.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d784cb4b-4190-420c-8e47-6714e938669e/how_to_report_toxic_leadership_army.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7adad27c-952c-4a3a-95e0-bcd3b37b2bbc/how_to_reset_a_galaxy_s6_that_wont_turn_on.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97dd13e8-865b-4d8d-8090-e5e2a7a845a4/92454784489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b9c30f4-72bf-4816-8506-68b8786c834d/how_to_start_powermate_generator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f413bdb-9ff7-4b26-a0c2-dda2a985639f/62451541814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4d8cb0b-bccd-4ec5-9eb6-d9e8bc395419/what_type_of_climate_does_chile_have.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/173d190f-d756-40f6-ab02-2aed1f662666/how_to_change_a_honeywell_thermostat_to_a_nest.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4d4694d-fa81-4a2d-b9b5-04b140681964/84317949465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/007ce5be-b983-40c6-8595-63af7aef53a5/fimoxu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000259fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x259FC 5152 bytes
SHA-256: e0f1ea9b5b8fb3c66731c6869670eb25fb3eff7e8527e2c6c36a22c5e8dee647
font_01_sfnt_off00026ba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26BA1 1640 bytes
SHA-256: e2a8cf3ae90b9a82ebf0add2d91a9d1ec9768ccc63ce40db21e7dac6586adc8c
font_02_sfnt_off000273de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x273DE 12224 bytes
SHA-256: cfeb0fcb437aa6d28cb0713c2c476ae1789afc7dda71f2496b98a7113b06da09