Malicious PDF — malware analysis report

Static analysis result for SHA-256 14b0bdd5ee808c07…

MALICIOUS

PDF

75.7 KB Created: 2021-06-08 09:23:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 9ce80dac2c80f6135e6ae4035a37b9bf SHA-1: 3df76f3b24279725cf992c8844a030211bd73c24 SHA-256: 14b0bdd5ee808c0747020a4d81c72343e007263569ef5b6106d5ee3f811af8bf
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one specifically identified as leading to a link farm designed to redirect users. The PDF's structure and the presence of multiple external URIs suggest an attempt to direct users to potentially harmful websites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • 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://medvor.ru/pbw?utm_term=printing+company+profile+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368225/normal_5ff2565e27f2b.pdfIn PDF document text
    • https://govobozof.weebly.com/uploads/1/3/5/3/135315692/sufoxulodojin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477886/normal_6054e4cc9cb4f.pdfIn PDF document text
    • https://lumifuwuzuzeb.weebly.com/uploads/1/3/4/6/134698668/976b9198745035a.pdfIn PDF document text
    • https://gibegijatu.weebly.com/uploads/1/3/5/4/135400332/nojusoriba-xinumapizeb.pdfIn PDF document text
    • https://xefomivor.weebly.com/uploads/1/3/0/8/130814633/gagegenikikuno.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460460/normal_6044cf610a149.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://redelaw.pbworks.com/f/how_to_connect_centrelink_with_mygov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a020606d-f307-4b5f-be38-f365b7ad67e9/easy_guitar_chord_songs_for_beginners_tagalog.pdfIn PDF document text
    • http://zixereves.pbworks.com/f/sobotta_atlas_anatomi_manusia.pdfIn PDF document text
    • http://xoxafepapesu.pbworks.com/w/file/fetch/144424173/bewabusekar.pdfIn PDF document text
    • http://kedetuwi.pbworks.com/f/python_machine_learning_sebastian_raschka_review.pdfIn PDF document text
    • http://zolunegoli.pbworks.com/w/file/fetch/144672753/worarefalorazofutota.pdfIn PDF document text
    • http://fepazonavu.pbworks.com/w/file/fetch/144672864/54134925638.pdfIn PDF document text
    • http://gosirata.pbworks.com/w/file/fetch/144455529/sivaji_the_boss_full_movie_in_hindi_free_download_300mb.pdfIn PDF document text
    • http://jesababa.pbworks.com/f/venn_diagram_questions_and_answers_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ee9023d-8b05-48d4-84f0-0af7777f8507/iso_9001_training_online_free.pdfIn PDF document text
    • http://risoxef.pbworks.com/w/file/fetch/144782262/download_streets_and_trips_2013.pdfIn PDF document text
    • http://xosufixemuf.pbworks.com/w/file/fetch/144442656/can_you_bring_2_carry_on_bags_delta.pdfIn PDF document text
    • http://biribivit.pbworks.com/w/file/fetch/144746541/xixemafuxuzobigidisadokis.pdfIn PDF document text
    • http://kifatozexi.pbworks.com/w/file/fetch/144782823/rio_2_full_movie_download_in_telugu_hd.pdfIn PDF document text
    • http://zepupifob.pbworks.com/f/what_is_the_latest_version_of_raft.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2d6fac7-a9e9-4c78-a1ee-ef44bdc62d7a/data_science_salary_nyc_entry_level.pdfIn PDF document text
    • http://xugilip.pbworks.com/w/file/fetch/144506817/focus_the_hidden_driver_of_excellence_free.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_off0000e986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE986 5400 bytes
SHA-256: d6d144c24f03f4c961ba0275f944810555d4a5931a2e0594eed62bd3167943f2
font_01_sfnt_off0000fbde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDE 11280 bytes
SHA-256: 9e24dcff3719f4411cf9bd67124b3df4dfce28d03df50d6db8d064f391b2456a