Malicious PDF — malware analysis report

Static analysis result for SHA-256 90ecb7f25c9ae0da…

MALICIOUS

PDF

189.3 KB Created: 2021-03-24 10:57:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 7f872f0962b41dd98e248fa691c667b9 SHA-1: cf3a818c25d6a71a9b29f3571ae7e295d2aa448e SHA-256: 90ecb7f25c9ae0da4f577b228f3c56eb35a6e20575c94e8ce089d8bf140589a4
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing attempt. The ML classifier and ClamAV detection further support its malicious nature. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest the PDF is designed to redirect users to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://fokemale.ru/award?keyword=aparato+respiratorio+resumen+pdf PDF link annotation
    • https://cdn.sqhk.co/bujasugawo/hihXhbI/netiga.pdfIn PDF document text
    • https://cdn.sqhk.co/mowanideju/ijfjfH9/jarif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422372/normal_5fcc6b1f1a228.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446038/normal_5ff786d570b82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_5fe7cbfa6b4f3.pdfIn PDF document text
    • https://cdn.sqhk.co/nawovoso/TijjjeN/4723806282.pdfIn PDF document text
    • https://cdn.sqhk.co/wajerewuwer/jcjizJS/18441293230.pdfIn PDF document text
    • https://cdn.sqhk.co/jevunazuru/vjii2jf/bixidedijurapole.pdfIn PDF document text
    • https://cdn.sqhk.co/wezopexa/jefD7jh/comcast_tv_channel_lineup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384026/normal_600a70300bc87.pdfIn PDF document text
    • https://cdn.sqhk.co/zidezofa/dghidif/pc_games_20219.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393036/normal_603be949ae7fd.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/jd4PCV2/orange_roulette_online.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/190fcf40-23ee-4bc0-a26e-74fa3538fdd3/maze_runner_scorch_trials_on_tv_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abd74c58-6892-48a3-8321-53809f3e3ad4/how_is_the_100_book_different_from_the_show.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3de829c-5566-418c-9b66-63e5db41effc/what_is_historical_fiction_for_elementary_students.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/wolode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f708ffa6-29fe-4d69-bc77-848334b645f6/webobamenavaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8d6ebf2-37f8-46f8-bf02-4d9eb3833b50/jobafepixi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff18664b-9e1a-489a-97cf-72d8911bcd50/what_kind_of_battery_does_roomba_use.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/36972646267.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/beach_buggy_racing_cheat_codes_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86acc9cd-5bca-4093-b522-250fc6a9b276/how_the_grinch_stole_christmas_full_movie_2018_english_free.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/employment_verification_form_i-_9_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/euro_truck_simulator_2_crack_free_download_for_pc.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_off0002a4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4E7 5144 bytes
SHA-256: 2f6183ddbe4926f3b5bb5f2fd5b2cabf568d9a4f3407ab4fd53029ab12ff5802
font_01_sfnt_off0002b650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B650 15804 bytes
SHA-256: d32703012f575b26975f5698cd8661c200588efe96504c42fd200c680a77b664

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