Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bbd2903ff06cee6…

MALICIOUS

PDF

68.7 KB Created: 2021-04-01 09:45:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 118e7860bb6dbd4c8b6b809960dfa2a4 SHA-1: 4f2c7b65817273ee4fa5e2ac0ab92dffa415d445 SHA-256: 6bbd2903ff06cee6454c1fa2f1594d5cc4ff0fbcac983f7d10dfa13298c67672
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as a link farm containing numerous external links, many of which point to disposable domains. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://soxebez.ru/award?keyword=agreeing+and+disagreeing+worksheets+pdf PDF link annotation
    • http://pedron.fun/7273393744lpyj.pdfIn PDF document text
    • http://tujugebisuxilun.22web.org/biluka.pdfIn PDF document text
    • http://vujivozopix.iblogger.org/8555770581.pdfIn PDF document text
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/nelix-xewazorux.pdfIn PDF document text
    • http://zakofuta.66ghz.com/philadelphia_street_map.pdfIn PDF document text
    • http://gbo.guru/tuxinupunonekupoguwokchbg.pdfIn PDF document text
    • http://naturaitalia.space/distress_tolerance_skillsn0vz7.pdfIn PDF document text
    • https://zuzilumapodebaj.weebly.com/uploads/1/3/1/3/131382406/wekopezenupabumabe.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/d1f8b159-5db4-461d-8e1c-a7848d6a93ea/euro_truck_simulator_2_product_key_list_2012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52636be6-e9ff-4c22-b11b-c4b914cd5aca/62331325959.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/how_would_you_describe_the_rhythm_of_a_poem.pdfIn PDF document text
    • http://fodapimogu.rf.gd/guest_service_agent_interview_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f901eb1-7708-4039-95e0-e45c51e03b8b/easy_electric_guitar_songs_for_beginners_chords.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adb72601-9e2a-4150-94a0-e1a55455f1cf/curious_george_books_author.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/how_to_look_up_autopsy_report_az.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/minuxaxig.pdfIn PDF document text
    • http://xogowiv.epizy.com/love_languages_list_meaning.pdfIn PDF document text
    • http://dakezemafatelo.epizy.com/livro_as_catacumbas_de_roma_em.pdfIn PDF document text
    • http://kavaxix.rf.gd/brighthouse_tv_remote_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33366c46-a1fd-4e15-bb96-6465606f50b4/nuvotesujemitamamevol.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_off0000d1c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C4 5416 bytes
SHA-256: d7724e81035bd5e9d151228f303513be650f0ff7356f32edf9cd483fdad81d91
font_01_sfnt_off0000e442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE442 9724 bytes
SHA-256: 6c8d86a49b7b07c30426675b3df8de9cf552f0063758800a5b390b3966fc3842

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