Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b777bd00347a839…

MALICIOUS

PDF

76.9 KB Created: 2021-03-28 06:58:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: b1d0a555de5b7af18379563079dea172 SHA-1: 259058b85116ac6b680ee5ef55ccd8a3928bf892 SHA-256: 9b777bd00347a83943ba160111e839cd637559f0eaea5fb2ee316deee2cc8f1d
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as Pdf.Phishing.Trojan. The presence of embedded URLs and the structure of the document suggest it's designed to facilitate phishing or malware delivery by directing users to external resources like 'dugedepap.ru'.

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 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.
  • 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://dugedepap.ru/strik?utm_term=libro+el+inversor+inteligente+resumen PDF link annotation
    • https://duvefotod.weebly.com/uploads/1/3/1/3/131380754/xunawopewezemux.pdfIn PDF document text
    • https://bikonate.weebly.com/uploads/1/3/4/7/134715396/5502151.pdfIn PDF document text
    • http://tabelib.iblogger.org/86465167957.pdfIn PDF document text
    • https://mituzeru.weebly.com/uploads/1/3/2/6/132681412/2527397.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lozagobowabe.rf.gd/74370324218.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/manual_radio_vhf_kenwood_tm_261.pdfIn PDF document text
    • http://burabovedi.rf.gd/javuzasezamapetatetu.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/god_is_red_review.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/vikarunonazitotorej.pdfIn PDF document text
    • http://vetanafajodomek.epizy.com/4793284197.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6f81822-3f84-4bf0-8c99-d2dbe983fc1f/tiwebilusafunivokinomub.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/liduzosukumevujub.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/tasusofadakel.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/meboji.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/que_es_una_propuesta_indecente_yahoo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71ebbde8-2961-448d-8d6b-326e9a4c5207/kavijixegurutozexujusifo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a972cbd-7e06-4ffd-bed1-32bcd4a364b3/19359807311.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1133b348-16f4-48da-9e81-376912a7a33b/porowibo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7462e877-71fa-4c61-8988-65ca4048daad/94847917941.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9602dcf-5685-49b5-8248-a8cc9fe16c36/how_long_does_g_shock_tough_solar_battery_last.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aac690ed-ef34-4cf6-b43e-163f204c8d58/where_can_i_learn_graphic_design_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a3add13-3fa4-4af5-ab0c-9e9f28d087b3/kala_journal_of_indian_art_history_congress_website.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4370b337-d02e-49db-bc3c-e468e2ff5596/naeyc_early_learning_standards_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/236cc5e1-c331-439a-8fa4-b4abb6825316/best_wow_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/cambridge_dictionary_offline_free_for_android.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_off0000ee19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE19 4936 bytes
SHA-256: 39776a451c47181f597af22921191fbe189e818acb021ca2c2c0632cba3fe990
font_01_sfnt_off0000fedd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDD 11872 bytes
SHA-256: 19dd81e173ec3515ad36fa71aaf32cdfabeaea787e50e850ac676ec7d7b62e31

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