Malicious PDF — malware analysis report

Static analysis result for SHA-256 48af90fcb36e518f…

MALICIOUS

PDF

79.1 KB Created: 2021-03-19 22:08:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1683d9ab74839f630c0aa871e7711536 SHA-1: 739cef5282144a0d81045df030dfa6234e929029 SHA-256: 48af90fcb36e518f3f974e4d531d5bc37e651fae73052250ad0cf220806df9e1
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to host malicious content or phishing pages. The document body is heavily obfuscated, but the presence of the external URI is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=jarl+elisif+replacer
    • http://helps-lnstagramcopyrights-about.com/pupifjxu7y.pdf
    • https://static.s123-cdn-static.com/uploads/4452853/normal_5ff679281fb01.pdf
    • http://xuzerujagojagip.scienceontheweb.net/accenture_accounts_interview_questions_and_answers.pdf
    • http://wowitaly.space/emathinstruction_geometry_answer_key_freeqqa53.pdf
    • http://hellesypakk.online/junji_ito_collection_anime_openingqyewk.pdf
    • http://loneresel.mygamesonline.org/75024782566.pdf
    • https://static.s123-cdn-static.com/uploads/4407070/normal_5fc5c005bf807.pdf
    • https://static.s123-cdn-static.com/uploads/4421767/normal_600045cde7879.pdf
    • http://sewukagazub.mypressonline.com/vuxejulikatedavugodotupo.pdf
    • http://fenofojerafama.22web.org/najasanodudotomupuwego.pdf
    • http://zonerokemub.getenjoyment.net/fudovenutomeka.pdf
    • http://dotekebenutedex.scienceontheweb.net/7158958768.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mokowiwar.rf.gd/scan_to_word_for_editing_online.pdf
    • https://uploads.strikinglycdn.com/files/e2c10220-267b-48ce-b7dc-9e42a17f370b/24128393388.pdf
    • https://uploads.strikinglycdn.com/files/a8e87ba9-97b5-49e7-823c-86833ff9671e/dunkin_donuts_bag_coffee_coupon.pdf
    • http://xatamiv.rf.gd/fuxif.pdf
    • https://s3.amazonaws.com/dogazisuze/mergers_acquisitions_and_corporate_restructurings_gaughan.pdf
    • http://mokimonanogi.rf.gd/speak_now_world_tour_live_free.pdf
    • https://s3.amazonaws.com/vebogotexaf/49717244249.pdf
    • http://tatuzukokamowa.rf.gd/gabion_wall_design_example.pdf
    • https://s3.amazonaws.com/ragejufa/jquery_ajax_post_form_json_example.pdf
    • https://uploads.strikinglycdn.com/files/e2c6b8d0-64c1-451b-b4e9-be9e8b06d77e/how_to_make_my_sony_blu_ray_player_region_free.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_off0000f7a2.bin
d3c4271c26128d727dda3f79a3be279082ddf9dcfc3a7229cc5f1d03ea7f046f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A2 4996 bytes
font_01_sfnt_off000108b3.bin
58d2550250ab6c3e083563553cd8750ecd535699da31be44e6d14de3833a806b
pdf-font-stream PDF embedded font (sfnt) at offset 0x108B3 11540 bytes