Malicious PDF — malware analysis report

Static analysis result for SHA-256 48aaad82a61993e3…

MALICIOUS

PDF

69.3 KB Created: 2021-02-19 14:45:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 47f371c76db06f57da09451f81d775b7 SHA-1: 3ba5fb6ef9e367ddf39cd0b3047db01c8e25bc1c SHA-256: 48aaad82a61993e309f3f7fe4c1b3a18f1571ea91e5464f6e456972099e30dca
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://druttle.ru/strik?utm_term=levene%2527s+test+of+equality+of+error+variance+a+b PDF link annotation
    • https://cdn.sqhk.co/jivumigen/gsjegg7/youth_football_coaching_sessions.pdfIn PDF document text
    • https://xukotonaxi.weebly.com/uploads/1/3/1/4/131453431/kujexefeviribux-pimojulowan-fawajoterujemom.pdfIn PDF document text
    • http://ruzazeruduzelu.22web.org/jigafakuko.pdfIn PDF document text
    • https://cdn.sqhk.co/zekafomaze/jg6eJie/totitiravopujetisux.pdfIn PDF document text
    • https://xuxufagitagagi.weebly.com/uploads/1/3/0/7/130740521/sidun.pdfIn PDF document text
    • https://felavutiz.weebly.com/uploads/1/3/1/1/131164211/silozizozaki.pdfIn PDF document text
    • http://save50it.info/android_21_good_deviantart9llt2.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/pasawe/ps3_emulator_for_mac.pdfIn PDF document text
    • http://xejedijet.epizy.com/sesip.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/mixixugitevubekup.pdfIn PDF document text
    • http://wotixoweg.rf.gd/78272872994.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/autocad_file_to_converter_online.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/malaysia_flag_colouring_sheet.pdfIn PDF document text
    • http://mageparojepu.epizy.com/bahubali_2_full_movie_picture.pdfIn PDF document text
    • http://wasalesex.epizy.com/exploring_science_hsw_edition_year_9_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/dancing_in_pairs_island_song_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/pirofanodox.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/89619354245.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_off0000cd90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD90 5276 bytes
SHA-256: 70d8e34da6354ad5b705f7fa7667cd2a987c33da94463fd5db65c04150b9085b
font_01_sfnt_off0000dfaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAF 11892 bytes
SHA-256: c8e053230bf9777e52f2f51a8640d581c50fc4e2fb361973d775526ca7db4266

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