Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f971286aa455e4e…

MALICIOUS

PDF

114.3 KB Created: 2021-03-05 01:00:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: bb69b5dc74b790a9d61990ee8a047d18 SHA-1: b7e3c3d0e27883e949a2e8189cd1ba4c95ca232c SHA-256: 9f971286aa455e4ee46132f67b94a2daef32803ba9cacda576fb9924b3cfb737
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URL that leads to a phishing site, as indicated by the 'Pdf.Phishing.Trojan' ClamAV detection and ML classifier score. The document body is heavily obfuscated, suggesting an attempt to hide malicious content or redirect the user. The presence of an external URI heuristic further supports the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/strik?utm_term=vanity+fair+show+becky+sharp PDF link annotation
    • https://cdn.sqhk.co/pagozixupezi/iGYDjjk/football_predictions_soccer.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/7TFtwkU/jesusoline.pdfIn PDF document text
    • https://cdn.sqhk.co/padasagam/iajIcIZ/62023029681.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/kimone/high_graphics_android_games_list_offline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1b0628c-a673-447b-b528-c620acc1a035/how_to_make_a_dirt_road_diorama.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7363eff-0428-466c-aecd-296aef74764c/unit_2_worksheet_2_domain_and_range_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb5cf973-8ecc-42c0-8375-d4708c9bbb26/fojawibigu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ca70243-82f6-4899-a81d-df5f030022c4/what_are_the_different_classes_of_antibiotics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/789af284-f74a-4e25-a657-ef2d5aa77662/nibolumuvopopasega.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2f296ce-03af-4320-92bb-32502bd7971f/how_to_stop_candle_flame_flickering.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1522bc9-fc6f-44b6-85be-833b9887fff8/76680374923.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b120fc4e-a58a-4506-96bb-8afe7cd5b2bd/42901126858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bb192bd-080c-4192-99cb-affb35f14e34/cuales_son_los_sintomas_de_deshidratacion_en_un_perro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d101d5f9-6b90-4923-b642-7dbf4cc3ac2c/second_order_differential_equation_application_example.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/zupofurobijomusilewodu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1299ea4-9d4b-4d3e-9899-9e487854eaad/how_to_do_interior_in_sketchup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9aee4e9b-31e7-4a7a-b463-91bbd423b22e/naser.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e518f3b6-cd69-4f43-ad2a-d9ac30a5c25f/how_to_scan_multiple_pages_brother_hl-l2395dw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fab20bcf-1e73-46e7-9ae7-787d038031be/nukolixevezipitetederi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e9e3b50-378d-4665-a15c-1e53c1cb69fd/kenmore_washer_not_spinning_fast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/114dc0e5-3f29-4326-a33b-c4256fff9e09/horton_hears_a_who_quotes.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_off0001825b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1825B 5432 bytes
SHA-256: ac0f899dec15ff0815972dd9ca2fe4d237c378b2ded1d14463fadf24755b800c
font_01_sfnt_off000194ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x194EE 12000 bytes
SHA-256: 6280695537e1fdb0bcef4db9c6b25866a91c2543cf08f2bbb5614c0b39213095

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