Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc0efc2c29cc2f2…

MALICIOUS

PDF

73.9 KB Created: 2021-03-01 05:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 56377a350ec334ae0fd00934cdce7e4f SHA-1: 9f87dd83b8f79a1967c8eb40217a278734564046 SHA-256: adc0efc2c29cc2f2cc6b252d2db2dcd785ec692f4fafa90cf54df8c381c57630
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 part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to educational content to trick users into visiting the malicious URL.

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://jumiwimov.ru/wix?keyword=simple+interest+worksheet+8th+grade PDF link annotation
    • http://deflecfcvy.best/batman_arkham_costumesxvwfw.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/64906471435.pdfIn PDF document text
    • http://vadosixajobirug.mygamesonline.org/winevojini.pdfIn PDF document text
    • http://lazirog.mywebcommunity.org/3340398070.pdfIn PDF document text
    • http://zekaxezixil.medianewsonline.com/84697256458.pdfIn PDF document text
    • http://rujisuki.mygamesonline.org/hp_officejet_4630_ink_target.pdfIn PDF document text
    • http://igclienteam.com/princess_dress_up_games_free_download_for_pcot3ly.pdfIn PDF document text
    • http://memimusisat.getenjoyment.net/toshiba_tv_universal_remote_codes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/xisopujotuneferikapepon.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/43525617025.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/57009534938.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/what_are_the_five_density-dependent_factors.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/new_whatsapp_status_2019_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/16674129327.pdfIn PDF document text
    • http://domuromu.atwebpages.com/are_volvo_expensive_to_maintain.pdfIn PDF document text
    • http://kisalonokexiwi.atwebpages.com/ubee_modem_dvw32cb_wifi_password.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/powili.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/gleadell_market_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/alcohol_120_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/deckers_co_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/30061084827.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9D7 5828 bytes
SHA-256: 3856ada0adc56575c80958052a03a6312c91bf54830ce4faf7ed39ec47b300ff
font_01_sfnt_off0000dd8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD8A 10816 bytes
SHA-256: 4fe7b9b8ea5f4e2247de976684e6f044acb17de6cb10f9933e8ed0b626e8355c
font_02_sfnt_off000102ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102AB 16740 bytes
SHA-256: 780ac9301e4149b70a97c465bfe9eb917d215e9135dfa03c2c0fddb18ea72567

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