Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfb00b0718995702…

MALICIOUS

PDF

79.1 KB Created: 2021-04-03 19:14:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 7a86e3f39ef3e37e838cb6e71f0fe75e SHA-1: 248b553beb5e17196279d85bba0aa8b5f9fbb445 SHA-256: bfb00b0718995702f9e5e6eb84f91ffd85f109bcae1a3eda4ed6601f7ddf3598
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to a suspected phishing site. The document body is heavily obfuscated, but the presence of external URIs and the overall detection suggest it's designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://dugedepap.ru/strik?utm_term=player%2527s+handbook+2+d%2526d+3.5 PDF link annotation
    • https://cdn.sqhk.co/tesadubozino/jsQdXii/minecraft_bedrock_edition_hide_and_seek_map.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/example_of_feminist_criticism_storyktmjr.pdfIn PDF document text
    • http://vashe-zdorovie.xyz/2046687371590l8f.pdfIn PDF document text
    • http://tubujefowabe.medianewsonline.com/dieta_cetogenica_30_dias.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/ijZq1Yb/hashtags_that_give_you_more_likes_on_instagram.pdfIn PDF document text
    • http://pibarulajido.getenjoyment.net/merge_with_adobe_reader_x.pdfIn PDF document text
    • http://oyuncuxx.com/319815339426nl7m.pdfIn PDF document text
    • https://cdn.sqhk.co/febutatesu/XN2MbLH/bigfoot_monster_truck_toy_hot_wheels.pdfIn PDF document text
    • http://jeratojovu.66ghz.com/avicenna_canon_medicine.pdfIn PDF document text
    • http://icily.xyz/fimoronanolovopidaviweod4oo.pdfIn PDF document text
    • http://najapizarut.22web.org/most_courageous_man_in_the_world.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://a6132035-7465-4fe4-be4e-2faa96c22dab.filesusr.com/ugd/cf950b_842af524a8754630a2e114a5c8317896.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d0eb713-81c1-4464-b402-302e9c2edfdf/13875962780.pdfIn PDF document text
    • http://dowuvoduwitovos.atwebpages.com/sepibepamovafebog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46507e11-0753-428f-b480-56a30dce5902/chinese_dirt_bike_mechanic.pdfIn PDF document text
    • https://aefbb2f1-1cfc-4a48-aab2-d72547d84173.filesusr.com/ugd/2f3ac6_5fe1bef23ea94097929ad5d24d1b5cbe.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceff3eda-5b9b-4194-960c-25520cb6cd54/she_has_that_girl_boss_hustle_meaning.pdfIn PDF document text
    • http://judiserod.onlinewebshop.net/britax_advocate_clicktight_convertible_car_seat_-_limelight.pdfIn PDF document text
    • https://a5a8f6e1-24ae-425c-880d-6f4079e3c376.filesusr.com/ugd/035627_ca036cd7de6b46f0a2ad388ea2bb12d6.pdf?index=trueIn PDF document text
    • http://mulotuzasokafo.epizy.com/26739243759.pdfIn PDF document text
    • http://waduxixefe.rf.gd/attestation_clause_form_4506-_t.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6327fbac-6e9b-4d83-9b76-ce00a31917f3/why_is_my_dishwasher_blinking.pdfIn PDF document text
    • https://93641f3c-03d3-4c8c-b6db-0fd9bfabe798.filesusr.com/ugd/384ca7_7e78c861a2144e878eaf8845af27bf35.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c052bd6-7dd2-49e1-af94-b3a507479e43/vibenejesenogororuvirugi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE064 5044 bytes
SHA-256: 9f488edcd9fe0be213ea21c05be42840b87362e7f95ec48638f9f551283821a8
font_01_sfnt_off0000f176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF176 14684 bytes
SHA-256: b8b71ae69c7c514ae6b79d183932e94db75149e8e04ed1c8532770abe2f85204
font_02_sfnt_off00011f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F53 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71