Malicious PDF — malware analysis report

Static analysis result for SHA-256 17a6976dda8e1add…

MALICIOUS

PDF

81.2 KB Created: 2021-05-23 03:16:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c1ab59273e7b3d46ebad187221d8d1c1 SHA-1: 97957246c5eabd55d34615ef5ae766e4ec112591 SHA-256: 17a6976dda8e1addf68452fc9048feee6c7142d23d0d0c68a0f024ca61f81d0b
192 Risk Score

Malware Insights

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

The PDF contains a heuristic indicating a mass external link farm and an embedded URL that mimics a search query for 'how do i book an appointment with uber greenlight hub'. This suggests a phishing or social engineering attack aiming to direct users to malicious content. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://seumenha.ru/strik?utm_term=how+do+i+book+an+appointment+with+uber+greenlight+hub PDF link annotation
    • https://dufavepuxafolim.weebly.com/uploads/1/3/4/2/134266173/4295354.pdfIn PDF document text
    • https://xulavuxedipi.weebly.com/uploads/1/3/4/0/134017657/tirojunor.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/5c091dd8-8092-4d7d-9036-5035de995b4b/introduction_to_computer_vision_uva.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/agronomy_of_field_crops.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/66006304772.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/35712843805.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07f38947-0f5b-44b7-916b-ee9e90101c09/el_ser_y_la_nada_resumen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2facd2b0-92a9-4069-b5bd-85f61382507e/the_divergent_series_allegiant_full_movie_download_in_hindi_480p_filmyzilla.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/loderavipigovubimotuxazir.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/fopakefilev.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/hypertension_diagnosis_canada_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/guardian_speedy_crossword_1210_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acfc515a-083c-4abf-a871-cc50bc93aeed/ge_logiq_e10_ultrasound_probes.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/sotepegudokeromuvirejaxem.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/janaboxatekonex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/967211d6-f475-4b6d-a67f-a553afa958e8/what_is_b12_service_for_honda_pilot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebf2802c-b8c8-4ae0-81bb-9e76d56051b5/jovukobedetifisugurozotiz.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/jlab_studio_wireless_headphones_charge_time.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/chudi_jo_khanke_male_version_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cae0834-f8bd-46ad-b99c-33bbb554e728/77926118657.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_off0000fed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFED3 5452 bytes
SHA-256: 1a86fd066a1e93917da3bf0cfbd60ada73c2d01cf97a08ede6761f9b364252b1
font_01_sfnt_off00011142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11142 11368 bytes
SHA-256: 06e01d69ffe19e35ff0f202cb98865ad0c98ac741b3f8feed734eec1d030703e