Malicious PDF — malware analysis report

Static analysis result for SHA-256 3491a0d06d2b76e5…

MALICIOUS

PDF

80.2 KB Created: 2021-05-19 17:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 53b74eaca0fc169d6b8eff1871d27d5d SHA-1: c158eb26c9e736b45305a7b862af5da844195c6f SHA-256: 3491a0d06d2b76e5f9d856bfd1454fd08c3bd9dd8ec5398a109c9ca32338fd49
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 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/strik?utm_term=the+twilight+saga+full+movie+in+hindi+part+4 PDF link annotation
    • 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/1fdb8156-5baf-4a64-8cc0-4a5e03695c9e/what_was_life_society_like_during_the_elizabethan_jacobean_period.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/xapubarisowidaf.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/heroes_of_the_storm_sylvanas_guide_deutsch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4a0d321-6971-454d-8997-698e8e50b91f/lotus_caravans_off_grid.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/nach_basanti_song_pagalworld_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/89624480246.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/malojekuzelarelijozi.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/aviary_photo_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2cecd5c-aab9-47d8-aa3d-9f5a53f9dffa/25866983934.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9af0c7d-6cf3-4f4b-88db-f3f7f22bb37e/zomuwesudaruxe.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/monthly_attendance_record_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40da51e2-a841-4da9-beca-6cd47f277315/88317935228.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/tekemexejafuv.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/2_times_table_worksheets_images.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/77567842762.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/kixadagob.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/mojofakorad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2560bdb5-9721-4af4-81d8-5c5358dc520f/war_of_the_worlds_ending_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1190ae0f-e16d-4223-854a-e9a2f711dcc7/vinubodola.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/juzolafadedemo.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/ximizexemovovoxesex.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/bexisenozesipilogaximal.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_off0000ed90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED90 5528 bytes
SHA-256: 4b54f2f789c1523989e7b5574371fa83232b52cacf8ccec907c10590e0f45082
font_01_sfnt_off0001005b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1005B 10560 bytes
SHA-256: 753475a5d84b2432cb18f9fba7e9422a224a69a6822d59f8fab1a8e08616eaa7
font_02_sfnt_off00012479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12479 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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