Malicious PDF — malware analysis report

Static analysis result for SHA-256 08b668356226983c…

MALICIOUS

PDF

69.9 KB Created: 2021-03-18 08:42:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 717f24d5b6f32d76878a219302e8034a SHA-1: dcadc2f6cb4580055846d2ff820bd19721f782d8 SHA-256: 08b668356226983c7dddc094762e740450599e7cfde542e52eb93ed96e5e9a2e
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one specifically pointing to a URL that appears to be part of a link farm designed to attract traffic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were directly extracted, the PDF structure and embedded URI heuristics suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://botokaw.ru/award?keyword=business+process+automation+aris+in+practice+pdf
    • https://zodazapel.weebly.com/uploads/1/3/4/5/134511258/motagavipo.pdf
    • https://welafunugor.weebly.com/uploads/1/3/5/3/135327357/gifarat.pdf
    • http://kuliwegi.sportsontheweb.net/history_of_great_britain_download.pdf
    • http://fawikenaxalu.scienceontheweb.net/77327699260.pdf
    • https://gomimujexewawid.weebly.com/uploads/1/3/1/0/131070583/5001865.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lurutopobi/zonifabupozeterada.pdf
    • https://uploads.strikinglycdn.com/files/5177eb90-ee1f-4ad2-980a-acaaa9f65e22/radiant_rider_waite_tarot_deck_instructions.pdf
    • http://pojozija.onlinewebshop.net/english_conversation_topics_for_class_7.pdf
    • https://uploads.strikinglycdn.com/files/8747e086-61f1-483c-b7bb-17a3572be85b/jumanji_epic_run_mod_apk_1._4._0.pdf
    • https://s3.amazonaws.com/towutoginadivu/how_to_prepare_dried_bean_curd_sheets.pdf
    • https://s3.amazonaws.com/napisakaluja/34663597752.pdf
    • https://s3.amazonaws.com/piradi/besabikipofu.pdf
    • http://tanonarimunal.myartsonline.com/evh_5150_iii_combo_manual.pdf
    • https://s3.amazonaws.com/dupula/how_old_is_mr._darcy_supposed_to_be.pdf
    • https://s3.amazonaws.com/sezewu/41773434521.pdf
    • https://uploads.strikinglycdn.com/files/039717f2-4d4d-4a62-980d-79894059b742/56380340752.pdf
    • https://uploads.strikinglycdn.com/files/f0b69e2b-0462-43cd-9b88-f6e462a255b1/sirep.pdf
    • https://s3.amazonaws.com/jonora/73386061540.pdf
    • https://s3.amazonaws.com/lowebemuwojiso/89383744737.pdf
    • http://bodegifu.atwebpages.com/calories_in_dunkin_mocha_swirl_pump.pdf
    • https://s3.amazonaws.com/bolovopizonuki/harry_potter_6_movie_in_english.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d54a.bin
4fcdea65169b23bde8b45a4b9b978636b07271dbc4236f7d3ea4eed8566be932		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD54A 5320 bytes
font_01_sfnt_off0000e74e.bin
776dd94f2754deeee53a71ee015fce048e9122aa5123d0366a193ecdbf940dc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE74E 10252 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.