Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe885a55771119b…

MALICIOUS

PDF

77.9 KB Created: 2021-03-25 14:47:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b8da23ee26af667de2edc55a0abbf6f SHA-1: 7edb9d8b6dd7b181e44673445a15f5e8e4a67718 SHA-256: abe885a55771119b4b56d39322a6fa5db71f55fb870b36075d7f1f53855ebe47
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/123?utm_term=band+master+film+songs
    • http://sport-stavki.fun/vulusokadosuxasrxmj.pdf
    • https://cdn.sqhk.co/dokadajij/ijBThg3/smart_balance_butter_light_ingredients.pdf
    • https://cdn.sqhk.co/pigevikuwi/djfeEjh/how_to_gain_more_followers_on_tiktok_hack.pdf
    • https://cdn.sqhk.co/dapubebireba/aEhcced/9807298142.pdf
    • http://nomerojelevat.22web.org/xabudolutezizeru.pdf
    • http://myfavoritesun.xyz/red_copper_5_minute_chef_recipesadd4z.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4a3bafc9-4855-47e1-bdbb-df439dec03c2/56216999406.pdf
    • https://uploads.strikinglycdn.com/files/4f8bb46a-1630-47af-bec4-d7e5b5995b3a/esa_essential_facts_about_the_computer_and_video_game_industry.pdf
    • https://uploads.strikinglycdn.com/files/4f773d66-b764-4535-b8d7-c49b517fc47c/sony_bdp-s590_apps.pdf
    • https://uploads.strikinglycdn.com/files/d3324bc0-f9a7-41ba-8ae8-f3408ce80c7d/what_does_grantee_mean_in_real_estate.pdf
    • https://uploads.strikinglycdn.com/files/48038be7-595e-453d-b5f7-3426f212426b/beviweno.pdf
    • https://uploads.strikinglycdn.com/files/54139b47-8c75-4789-9ae8-0c832cbf573c/wosodeselojezonive.pdf
    • https://uploads.strikinglycdn.com/files/6d2cc27e-a0ea-4958-9498-52284fcaae12/fugumetulexavaxu.pdf
    • https://uploads.strikinglycdn.com/files/f5c9dd57-2cc9-42fe-b551-32d31b1e291f/plantronics_co54_troubleshooting.pdf
    • https://uploads.strikinglycdn.com/files/0ae2e33b-7272-460e-b6f1-f5d8509fe299/98827873504.pdf
    • http://wepirizifomonij.epizy.com/3_digit_subtraction_without_regrouping_worksheets.pdf
    • https://uploads.strikinglycdn.com/files/88a6c838-2977-4af5-bce1-50264cb49b8e/beats_studio_wireless_manual.pdf
    • https://uploads.strikinglycdn.com/files/4828993d-12b4-4cba-8fe4-a0a8b28ba360/89232846873.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_off0000f3c2.bin
63fc140465ce7676b501e618d8df6250cca3c35fd1c1d899b68ce4a74ad2ff99		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C2 5276 bytes
font_01_sfnt_off0001059f.bin
6f343145cc5fa287c88a9e8a33fa517a61e28dee1058856fe71a770293635522		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1059F 10788 bytes

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