Malicious PDF — malware analysis report

Static analysis result for SHA-256 034672ba954f7967…

MALICIOUS

PDF

74.9 KB Created: 2021-04-02 17:40:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: ccf4142792485ef69d83b71922ab0b86 SHA-1: 7a7dbf37a4aa3aff868b54804f124dbfdf7ee757 SHA-256: 034672ba954f79670e6e4c27656683fcec963cc80c37d794c2a3015cfaa9edd8
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/strik?utm_term=maximum+ride+the+angel+experiment+full+movie PDF link annotation
    • https://cdn.sqhk.co/piwizogir/fibdhd4/never_have_i_ever_questions_extreme_clean.pdfIn PDF document text
    • http://ing-cliente.com/what_is_a_good_noise_reduction_ratinglbkma.pdfIn PDF document text
    • http://nat-yoga.space/resumen_de_la_obra_un_grito_desesperado_capitulo_2k1d19.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/jjggMRN/odehyieba_priscilla_worship_songs_audio_download_mp3.pdfIn PDF document text
    • http://jalazekesofijot.medianewsonline.com/aphid_life_cycle.pdfIn PDF document text
    • http://bilkaita.space/workpro_quantum_9000_assembly_instructions8z3pk.pdfIn PDF document text
    • http://nekuwagibajese.getenjoyment.net/singular_and_plural_nouns_list.pdfIn PDF document text
    • http://stickerrus.ru/4056854050381r4s.pdfIn PDF document text
    • http://ziposodepow.mywebcommunity.org/79288816191.pdfIn PDF document text
    • http://bathforlegs.xyz/games_strategies_and_decision_making_2nd_edition_by_joseph_harrington._worth_publisher4jmgg.pdfIn PDF document text
    • http://remontlegko.info/raymarine_e80_chart_cardr0m22.pdfIn PDF document text
    • https://cdn.sqhk.co/fivukidado/Fvjh5gc/46215254250.pdfIn PDF document text
    • http://dosaxixapaxa.medianewsonline.com/68611909147.pdfIn PDF document text
    • http://tumbochka.space/sukadouftfo.pdfIn PDF document text
    • http://psyhologrzn.ru/8535629921762q0d.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/3fd8a00c-295f-4c73-8efe-f5c004cd7e75/14325032515.pdfIn PDF document text
    • https://c2c662fa-00ac-4c69-bf5d-04da7d6c99e2.filesusr.com/ugd/9b33c5_1af85399bbdc43699866a3a286e5e758.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d26878c1-f3f6-4fd7-8115-d4f7047a2edd/ziritisunixupasujekelim.pdfIn PDF document text
    • https://28546a20-d0cc-4b82-bb4f-6711990cd5a3.filesusr.com/ugd/0bcf16_286559fa695e4fdc88cc231ce8a5800d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/94aae1ae-7f87-4e07-823e-bc37e48013ff/big_green_egg_large_table_cover_dimensions.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_off0000e673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE673 5408 bytes
SHA-256: 4f4374de390340def83729dce7c0b88be9956df282ef87312e814052fc7eab0e
font_01_sfnt_off0000f8cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8CF 10976 bytes
SHA-256: 476fc4a83c6c6d5a73c6e656a9c05e0f57ede12e32f841a6e78b6a5929c89812

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