Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e99b1c90c15f442…

MALICIOUS

PDF

77.4 KB Created: 2021-05-23 05:04:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: aa4668fbdc2f998862a39d2626ea0cb2 SHA-1: 722d3e4d3cc2cf89ce0a5bffe708a8e5604e84ae SHA-256: 3e99b1c90c15f442077f3fc4254a76c29671101b90faf194a321216a23d97442
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://dafemum.ru/strik?utm_term=anatomy+of+medical+terminology+stiles+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422137/normal_603215bde77c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_605185a44923a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452599/normal_5fdcf92003f86.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409244/normal_5fd06b053eee8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382793/normal_604a9e54a945a.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/lurutopobi/electrical_estimation_and_costing_vtu_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/daintree_rainforest_self_guided_tours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/743552ba-3ce5-404d-8df6-469d22b51e59/3100070714.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a95d9f6-efa7-42e0-b60f-eb5b3bce64f4/garmin_zumo_660_gps_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55813629-fda2-49ab-9e03-ee19c8f4cb6d/zawunu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/869735a0-e6d6-4f74-bfd6-37bbb39199d6/resumen_del_libro_manifiesto_comunista_de_carlos_marx.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/21690871496.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffefc120-ddf4-49dd-9c75-e939e1bc8563/ejercicios_de_caligrafia_tercer_grado_primaria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68fd1734-ff58-4564-be6c-8586a4f9d378/go_tell_it_on_the_mountain_with_lyrics_christmas_gospel_song__carol.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/maze_runner_movie_download_in_hindi_300mb.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/guild_wars_2_elementalist_training_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/57498879533.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/4297980153.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/tifamufidifujarubaroji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c7163ff-a892-4f46-95c1-153e65dbed88/zekefavelikiwejebiwujil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15768216-1d5c-436d-92a8-93f311ce81ae/the_expanse_season_5_episode_7_synopsis.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/66829715220.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/can_i_use_gopro_7_as_webcam.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC1 5564 bytes
SHA-256: 0b552b8b1f2e70629d464a42e5f62c50aceaa24def07d9082441d57be6c12257
font_01_sfnt_off000100ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100AB 11080 bytes
SHA-256: a605783959eb96d3819b6273e7f80359ef73ed70da07b440191b12ce7d96b8e6

Open this report in the interactive analyzer, or submit your own file for analysis.