Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e0fdff064494a19…

MALICIOUS

PDF

80.1 KB Created: 2021-03-06 12:53:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0df1b7abbae04540fa9cd9b698be5eca SHA-1: 2e8296a09be44c248ba8990985982f4f6680cdeb SHA-256: 3e0fdff064494a199558a1a2ac6341701542b7eaa122615ddeddb7b126920a58
136 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ML and ClamAV, as malicious and phishing-related. It uses an image lure to redirect users to a URL that appears to be part of a phishing or malware distribution scheme. The embedded URL and the overall detection pattern suggest an attempt to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/strik?utm_term=what+are+the+contents+of+a+book+review+ppt PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487632/normal_60120883db8e6.pdfIn PDF document text
    • https://tedibajibivo.weebly.com/uploads/1/3/1/4/131406927/7006313.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420034/normal_60243e74529c3.pdfIn PDF document text
    • https://pugubitef.weebly.com/uploads/1/3/5/3/135302221/6285891.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385631/normal_5fee8a47d7541.pdfIn PDF document text
    • https://vegilirebaj.weebly.com/uploads/1/3/1/0/131070576/wamafelunu_wufedozikokaki_lasugegewo_govujemulikulo.pdfIn PDF document text
    • http://pukazabix.22web.org/digeno.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/xadopuwaleba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445869/normal_5fcba50293afa.pdfIn PDF document text
    • https://bivesazi.weebly.com/uploads/1/3/4/6/134652180/retonewenikapaxu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374376/normal_6002580296ce3.pdfIn PDF document text
    • http://pidawudimo.scienceontheweb.net/baby_trend_sit_and_stand_double_stroller_pistachio.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379856/normal_600849339278a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459641/normal_5ff6ae2f0955b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454168/normal_5febed7b69822.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://uploads.strikinglycdn.com/files/17cd9961-c6c4-4b04-9b20-44f515442aa8/62058817445.pdfIn PDF document text
    • http://rurudowofalav.rf.gd/93768007132.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6149f10b-6328-40a2-8311-358eb9d83225/reading_comprehension_books_for_2nd_grade.pdfIn PDF document text
    • http://liraperuwuw.atwebpages.com/format_surat_lamaran_pekerjaan_doc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f994018c-0d2f-44b4-980e-05aae1bb5aea/game_of_thrones_books_ending_vs_show.pdfIn PDF document text
    • http://losisotudek.epizy.com/8394847243.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd7bb5a6-0f1c-4c08-ab3f-76d9dedfbc58/how_much_is_sky_fitness_membership.pdfIn PDF document text
    • http://gowofar.rf.gd/who_are_the_main_characters_in_the_green_mile.pdfIn PDF document text
    • http://xedaripa.epizy.com/compuestos_inorganicos_biologia.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_off0000eef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF3 5228 bytes
SHA-256: cb05e7a19d13b61720a15423ad06b318a8cb268f702d191ee1f9525e1dfeb430
font_01_sfnt_off000100bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100BD 10464 bytes
SHA-256: bce70626f2280341962336240f12c841aac64dcbc1cff266e6a494f892050fb5
font_02_sfnt_off00012490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12490 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378