Malicious PDF — malware analysis report

Static analysis result for SHA-256 65dba3f13c8b024c…

MALICIOUS

PDF

73.0 KB Created: 2021-03-24 14:13:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f604b6e1d2fbf4511abbc022fd83c597 SHA-1: 76fc422fcd820b57640f2c2855cd4a850f10b3d6 SHA-256: 65dba3f13c8b024c85cb806b30ce2c787f24ea2c9a5ec09f324495e940bfba4b
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, suggests a lure related to 'functional workout'. The presence of an external URI heuristic further supports the malicious intent of directing users to a potentially harmful website.

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://ponafet.ru/strik?utm_term=what+is+functional+workout
    • http://bagezokazuraw.medianewsonline.com/72611849187.pdf
    • http://instapriz.online/rajofogitodabijobojulvadh.pdf
    • https://cdn.sqhk.co/ripowusaro/hefghia/tower_conquest_mod_apk_ios.pdf
    • http://marketeuro.pro/the_exorcist_3_full_movie_download_480pno0u2.pdf
    • https://botabire.weebly.com/uploads/1/3/4/6/134629411/2110232.pdf
    • https://cdn.sqhk.co/gabunufu/jcibChg/juxukajizeridamiletotov.pdf
    • http://lnstagram-helping-centre.com/motorbike_sidecar_racingbra4j.pdf
    • https://devitigofe.weebly.com/uploads/1/3/1/0/131070043/ligidukovute.pdf
    • http://kedugobepuged.mywebcommunity.org/10618974332.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mixanaz/jhoom_barabar_jhoom_movie_songs.pdf
    • https://s3.amazonaws.com/dosalapasenow/pugiroted.pdf
    • https://s3.amazonaws.com/fonibinaraj/2013_camaro_zl1_performance_specs.pdf
    • https://uploads.strikinglycdn.com/files/f43ee2f1-a4e2-4107-8817-33fe502834be/fun_race_3d_mod_apk_download.pdf
    • https://uploads.strikinglycdn.com/files/b87f6573-434e-4fa4-8dcb-8c1921ad2a2f/rainbow_vacuum_parts_for_sale.pdf
    • http://lugifer.onlinewebshop.net/94634823776.pdf
    • http://todiwefexoneb.atwebpages.com/71709578723.pdf
    • https://uploads.strikinglycdn.com/files/f4f6e396-ec5f-4a99-bb8f-a394ba8077d5/the_house_of_bernarda_alba_full_movie.pdf
    • https://uploads.strikinglycdn.com/files/9ccdf688-8431-4c48-b30e-090e81c8db08/drawing_apps_for_pc_windows_10_free.pdf
    • https://uploads.strikinglycdn.com/files/1db6ccc5-f411-49bc-a60c-86ff3771bbd6/zombie_apocalypse_survival_guide_max_brooks.pdf
    • https://s3.amazonaws.com/toguvaju/hedda_gabler_play_guide.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_off0000e110.bin
c9980b95c263f4826b2551de4f589ea94ac39182b16904dbabde03c803d40fb8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE110 5136 bytes
font_01_sfnt_off0000f2a1.bin
75053f92ab8e804412ebef5cb1c3fe21d417721e267b11294cd8b26fb6cb79e2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A1 10604 bytes