Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c37e2a8924228ed…

MALICIOUS

PDF

69.8 KB Created: 2021-02-27 12:32:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: f279fafd166a8a45675fcb16f24b837e SHA-1: 51a347d878c59fcbc5536dfffdbcdaed20551c98 SHA-256: 8c37e2a8924228ed9349f09c5ecefe68a4ee741373f67ed39e7a3dafc3a7eb91
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://xajibur.ru/wix?keyword=annotated+reference+manual+on+scientific+evidence PDF link annotation
    • http://gekifek.scienceontheweb.net/what_is_a_functional_analysis_in_engineering.pdfIn PDF document text
    • http://rowexusaje.mypressonline.com/1987_suzuki_quadrunner_250_carburetor_adjustment.pdfIn PDF document text
    • http://tarusexozof.iblogger.org/8x8x8_led_cube_arduino_uno_code.pdfIn PDF document text
    • http://wonuwomola.iblogger.org/fobolinarufa.pdfIn PDF document text
    • http://semengergel.ru/what_are_the_characteristics_of_a_tropical_rainforestortow.pdfIn PDF document text
    • https://wafulezejo.weebly.com/uploads/1/3/4/7/134748518/7040189.pdfIn PDF document text
    • http://poxumanavofeboz.scienceontheweb.net/what_are_the_hero_ranks_in_one_punch_man.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/8127349543.pdfIn PDF document text
    • https://boxijobanopuvob.weebly.com/uploads/1/3/0/7/130739783/kujivowowevitekafe.pdfIn PDF document text
    • https://kixipebirivevex.weebly.com/uploads/1/3/0/7/130739750/7849021.pdfIn PDF document text
    • http://pubgucbayim.com/how_to_reset_a_motorola_droid_turbo_220jy2.pdfIn PDF document text
    • http://gojovobikazed.iblogger.org/how_did_montresor_kill_fortunato_in_the_cask_of_amontillado.pdfIn PDF document text
    • https://xuzumuja.weebly.com/uploads/1/3/1/6/131636792/4539795.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/76782746070.pdfIn PDF document text
    • http://katezoluvezile.epizy.com/7971521692.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/bomag_80_roller_spec_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/gana_sudhakar_album_song_tamil.pdfIn PDF document text
    • http://satawakerexe.atwebpages.com/74078064544.pdfIn PDF document text
    • http://wusozugidiwe.rf.gd/cercle_de_la_forme_saint_lazare_horaires.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/cwm_recovery_mode_apk.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_off0000d4b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B5 5216 bytes
SHA-256: 92c92be518d37dfd68d5b54f76d3d8694a9139e6a96d2351463ad957fff13d2e
font_01_sfnt_off0000e66a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66A 10328 bytes
SHA-256: 97f1f7b9b8145236ff1902551e741862f84e7efe93cfe4e9f8daa45a82cb27a9