Malicious PDF — malware analysis report

Static analysis result for SHA-256 33eeeea1106033bb…

MALICIOUS

PDF

84.8 KB Created: 2021-05-07 13:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: c0ccf75ba5c94fd21b768f45ae6c485a SHA-1: cd112260e5656009e19a35b3280c4aa4ec9d9d54 SHA-256: 33eeeea1106033bbae58bbf8d84fb87f804e0c34cfbebf313d3d2a9a71dff9eb
146 Risk Score

Malware Insights

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

This PDF document contains embedded URLs and is flagged by multiple heuristics as malicious, including ClamAV and an ML classifier. The document's content, though heavily obfuscated, appears to be a lure for a phishing or scam campaign, directing users to a suspicious URL. The presence of external URIs and link farm characteristics further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=panasonic+cordless+phone+rechargeable+batteries PDF link annotation
    • http://berizala.22web.org/jubejeditasexetufe.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/594033998169bdyv.pdfIn PDF document text
    • http://trenolgia.buzz/percy_jackson_and_the_lightning_thief_movie_charactersvpnqp.pdfIn PDF document text
    • http://wafixevewitope.mypressonline.com/lezirawobifolupeja.pdfIn PDF document text
    • http://sisogelodaze.medianewsonline.com/drug_metabolism_in_kidney.pdfIn PDF document text
    • http://mujubow.getenjoyment.net/fopelajajepojagowaz.pdfIn PDF document text
    • http://ruwegekugite.22web.org/xamilekitadofupaxutux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://fc06435f-e709-4c80-b59d-96fa470c1a13.filesusr.com/ugd/bdc04d_4153e784e20543d79074439c169f3508.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2291be10-9395-48b5-8b24-4b731c3029de/73315735583.pdfIn PDF document text
    • http://viwumizebawekez.epizy.com/sepodozisedamukagisawatum.pdfIn PDF document text
    • http://gifadaluj.epizy.com/gumidozowutazerupir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed265539-b8a7-4668-8049-969f6707d566/jagerapivid.pdfIn PDF document text
    • https://4c982f7a-b72b-446d-8c7a-5e2d6818c0db.filesusr.com/ugd/519a61_72fb1971e7194dd09f2735affe9c80d3.pdf?index=trueIn PDF document text
    • https://070488ba-e3d9-4c74-834b-445551f5513c.filesusr.com/ugd/fb83f1_94ad5e5753834ae4a5358bcbec35eb12.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/765ce318-436f-4cc1-97fd-d3ea0d91ecfd/mutant_and_masterminds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4be7ff47-0d6f-4b3a-acf2-a96253bc9993/what_are_the_modern_literary_theories.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c60d7252-a483-4fd2-8441-f2fc77b12ddd/ketudugosediwivago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b34782d-7f7e-48a1-be44-a112351a302f/2029009676.pdfIn PDF document text
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_ba4a1c2e31f240bfa58698f4ec65410d.pdf?index=trueIn PDF document text
    • http://jugikan.epizy.com/are_payroll_taxes_going_up_in_2021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f81d2d60-bdad-4818-9ce2-2829fd0a5a9b/45567566070.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_off0000fe27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE27 5264 bytes
SHA-256: f53c57370c7541cd22017e2f570fcd76e89fed3423692c0258eaba1a534eb7c6
font_01_sfnt_off00010ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF5 11672 bytes
SHA-256: 4413c5d7bf59b35d31d2b3c1b1799bc9d0f4ac05a29d8d3cc3dad8528e96f750
font_02_sfnt_off00013756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13756 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361