Malicious PDF — malware analysis report

Static analysis result for SHA-256 c20e15026c1c26ee…

MALICIOUS

PDF

107.4 KB Created: 2021-02-28 04:16:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 26f4b9251dd3b7e70b0954a943b4a9eb SHA-1: 3ca85debc6638f6fca64408557478d35043f7d9b SHA-256: c20e15026c1c26ee5c63ef3221ea2bc31358b3ee3fb888e092e2313c650e06da
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to a suspicious domain, which is also listed as an IOC. The ML classifier and ClamAV detection strongly indicate maliciousness, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'GRE online test prep free', suggesting a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/award?keyword=gre+online+test+prep+free PDF link annotation
    • https://cdn.sqhk.co/turaxulefa/3ghLNhl/zoxutowugufo.pdfIn PDF document text
    • http://vaxuserinux.22web.org/babexe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bagineju.epizy.com/2013_cadillac_srx_navigation_system_manual.pdfIn PDF document text
    • http://pisarojimogite.epizy.com/how_to_oil_singer_sew_mate_5400.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/duditajadalinaxojisib.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/xivut.pdfIn PDF document text
    • http://zutagisite.epizy.com/safevasanizufegurotexuvo.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/character_certificate_template_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/casio_illuminator_touch_watch_price_philippines.pdfIn PDF document text
    • http://xonelamurojili.rf.gd/google_play_games_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/jekijalina.pdfIn PDF document text
    • http://golokelu.rf.gd/oneplus_7_android_10_bugs.pdfIn PDF document text
    • http://sowabufiki.rf.gd/56936864013.pdfIn PDF document text
    • http://lorabedujeweb.epizy.com/monopoly_style_board_game_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/oh_so_you_re_approaching_me_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/role_playing_games_for_android_offline_apk.pdfIn PDF document text
    • http://wamebebubo.rf.gd/22936808168.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C17 4716 bytes
SHA-256: 55e6530273ef5dc5a5c88f5525bc77c04deb768d923ab4de03cb2fcebc11b27a
font_01_sfnt_off00017c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C33 10640 bytes
SHA-256: 23decffd1432f215ba473baaf402a89054c2df15d7ff03005a8fc42cbf08b795

Open this report in the interactive analyzer, or submit your own file for analysis.