Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcc5223ef8e1f619…

MALICIOUS

PDF

224.8 KB Created: 2021-05-26 04:16:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8660128d375e1acbe076a2a717a0f6af SHA-1: 21f5ab7029efe4f79f711fb47c5b4e3f151cf90b SHA-256: dcc5223ef8e1f619717d2b446ad1826f9ba873a9f95cfcd9d3ffe69c046d2c88
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a suspicious domain. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics indicate an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://nipisod.ru/strik?utm_term=class+11+business+studies+book+pdf+poonam+gandhi
    • https://naxazutip.weebly.com/uploads/1/3/4/6/134610322/dopamu.pdf
    • https://nelixifejesuvol.weebly.com/uploads/1/3/1/4/131406681/rirul_dorudebasugisu_rejedexiguv_vovaditudomaxu.pdf
    • https://bulabameworiw.weebly.com/uploads/1/3/4/0/134096114/temozetojaredej-pelemakure-rafutekur.pdf
    • https://fekipasipoxow.weebly.com/uploads/1/3/1/6/131637207/xiferunof-luwekune-lijuje-nedetakelem.pdf
    • https://bakubirusi.weebly.com/uploads/1/3/4/6/134680497/3590546.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0bfb578f-9a87-4358-bb9c-4fd2b170debc/the_magic_school_bus_characters_age.pdf
    • https://uploads.strikinglycdn.com/files/e5b6e8b4-1ad6-46bb-8cfc-95897d5eda81/tosaxalowigavazofisagu.pdf
    • https://s3.amazonaws.com/gimisorixosu/59647631351.pdf
    • https://uploads.strikinglycdn.com/files/b7ed4821-daea-465d-bb1a-b9e6a94990c6/a_streetcar_named_desire_quotes_blanche_lying.pdf
    • https://uploads.strikinglycdn.com/files/0fda0849-de8e-49d2-9694-445051e1722b/vatarudijiluge.pdf
    • https://s3.amazonaws.com/nunakixuma/kebiker.pdf
    • https://s3.amazonaws.com/xubifupi/lifobafejojezipadetura.pdf
    • https://s3.amazonaws.com/norozovijalu/12_basic_functions_activity.pdf
    • https://uploads.strikinglycdn.com/files/944df60e-277b-4c75-96dc-362061969577/99436056723.pdf
    • https://s3.amazonaws.com/mefadedosuw/angry_birds_rio_games_mod_apk.pdf
    • https://uploads.strikinglycdn.com/files/ae7fb1ef-06de-4fbb-975e-f44db03a3907/xakepusivogejugenabal.pdf
    • https://s3.amazonaws.com/toguvaju/parrot_bebop_2_drone_manual.pdf
    • https://s3.amazonaws.com/kobivimelelo/diseases_of_male_reproductive_system.pdf
    • https://s3.amazonaws.com/dixaleko/guitar_chords_chart_for_beginners_left_handed.pdf
    • https://uploads.strikinglycdn.com/files/0d526aec-f37f-4268-8b2b-10888cd4b398/how_to_get_btools_in_roblox_lumber_tycoon_2.pdf
    • https://s3.amazonaws.com/marimejerebo/ginilizasijuzenapabag.pdf
    • https://s3.amazonaws.com/fukezavazuj/92287260651.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00032278.bin
08636dd317059f5c3a48edd65ca6f850a71166d1270f8809f85180313a614530		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32278 5520 bytes
font_01_sfnt_off00033519.bin
917a19c3c8fd357a1c04dc8e1eb2dbab414cbc3f41e0e10524fd13d964bfd5f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33519 12460 bytes
font_02_sfnt_off00035e52.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35E52 16164 bytes

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