Malicious PDF — malware analysis report

Static analysis result for SHA-256 224cad81165f7873…

MALICIOUS

PDF

83.0 KB Created: 2021-03-19 23:30:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36757dabda98a79b07a0c1f2dc69abaa SHA-1: da14962b1b9eb7b9cc84810709057f3bd1eb87f1 SHA-256: 224cad81165f78735c6432a445546f9f3fefe2e34ee6f6e2b7bc462e265297d9
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware download site. The document body, though heavily obfuscated, suggests a lure related to legal documents, specifically the 'Australian banking act 1959 pdf'. No scripts were extracted, but the presence of external URIs and the nature of the detection indicate a phishing attempt.

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://zajinet.ru/award?keyword=australian+banking+act+1959+pdf
    • http://pofuvize.iblogger.org/33901642941.pdf
    • http://xezawavebavulem.iblogger.org/3908707394.pdf
    • http://pozuvixa.getenjoyment.net/house_on_mango_street_book.pdf
    • http://lixusopo.mywebcommunity.org/16545069642.pdf
    • https://teregurejojexol.weebly.com/uploads/1/3/4/8/134879353/8349226.pdf
    • http://tulomodev.getenjoyment.net/how_to_adjust_noise_cancelling_on_beats_studio_3.pdf
    • https://lubexunomug.weebly.com/uploads/1/3/2/6/132696146/pefap.pdf
    • https://nebekateri.weebly.com/uploads/1/3/1/1/131164314/gisozemusijav.pdf
    • http://gixitetopes.scienceontheweb.net/new_bangla_islamic_book_download.pdf
    • http://raxewaponoxiv.mygamesonline.org/my_ge_washer_stopped_working.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kepipejesa.epizy.com/xiwadobibofojo.pdf
    • http://gotulitedovolen.rf.gd/how_to_use_nanostation_loco_m2_as_repeater.pdf
    • https://uploads.strikinglycdn.com/files/616a9afc-748d-4969-9ca2-1df0c8970580/5_examples_of_figurative_language_in_marigolds.pdf
    • https://uploads.strikinglycdn.com/files/7475af4a-e430-4791-8ba4-b3a50c9eedd7/whats_the_difference_between_my_cloud_and_my_cloud_home.pdf
    • https://305aa2e3-e1d2-413d-aa2e-f1bb83d03ded.filesusr.com/ugd/92ee2b_b89fd5f05a694acea349cb4e9c5fa68f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/bd343bcb-489c-4f0b-a71f-8c214e48b0fc/63426617714.pdf
    • https://9e0ebcba-7e04-41ac-afc6-cfc574163c15.filesusr.com/ugd/6725b5_bca78f5fe4e64efbbd5ecc70e30c6a90.pdf?index=true
    • https://22e365c6-0853-42e1-82f8-83473bf9c0bf.filesusr.com/ugd/217d68_151cf58322464c21bd0f9eb3697783c8.pdf?index=true
    • http://feferabi.atwebpages.com/project_manager_interview_questions_amazon.pdf
    • https://f3dbd103-cf2f-44fc-b0ad-c9004dc38af2.filesusr.com/ugd/1f2646_0f6be68a025c4511b0382fe3b0b11fb4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/18c92d50-7338-4c19-a712-f782a9111c11/alfred_basic_guitar_method_book_3.pdf
    • https://uploads.strikinglycdn.com/files/1729310a-92c7-4b18-ae3f-e19786c6e66a/muslim_baby_boy_names_in_urdu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001063e.bin
ef1dce66e0a17ca2470fffc0db436ed070398cf9017653424da6c32eb4f5a1bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1063E 5848 bytes
font_01_sfnt_off00011a3c.bin
b2f8b14f43091c8d1b76d7d39e6fa48c9511ebc84c3c8d4d76b6c49afeb9c4e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A3C 10660 bytes

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