Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd49ba0b30cc94d9…

MALICIOUS

PDF

71.4 KB Created: 2021-02-20 14:45:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3e0c0f30f119547d924b7e905cf06c59 SHA-1: a774112235eca8db86330f5b1f509ca4af6993ea SHA-256: dd49ba0b30cc94d9babc0deff2d52da98c4265041ac4202ed5a24fce8af01c7b
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that, when clicked, leads to a suspicious domain, likely serving as a lure for phishing or malware distribution. The document body, though heavily obfuscated, appears to contain text related to search queries, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/123?utm_term=what+exercise+with+dumbbells PDF link annotation
    • http://zesizejo.22web.org/zifegifiwuxolonenar.pdfIn PDF document text
    • http://azules.ru/rockstar_movie_hd_worldfree4uxsfva.pdfIn PDF document text
    • http://pribor-poverka.site/eq_p99_bard_leveling_guidea54a8.pdfIn PDF document text
    • http://twoup-viktoria.online/siwefewusutilefifin0eqi.pdfIn PDF document text
    • https://cdn.sqhk.co/fezemepusap/pK6Jgfc/guduxufexutaki.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/paropabaru/mubudij.pdfIn PDF document text
    • http://dufenujel.rf.gd/how_to_decorate_a_snow_tipped_christmas_tree.pdfIn PDF document text
    • http://miloxagiwe.epizy.com/73524889684.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/jojonarumagofunegotiku.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/jirubafudifup.pdfIn PDF document text
    • http://gowuzabe.epizy.com/see_android_messages_on_ipad.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/print_gridlines_excel_sheet.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_off0000db09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB09 5492 bytes
SHA-256: ade82d07eb16a162e6f56dac5514446a075ec6cb27ede7b14218beb7f409d786
font_01_sfnt_off0000eda2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA2 10248 bytes
SHA-256: d5c87b312be4105a0e78b4b1e44ac03aa2d474f5bc8df6c26d64afae924b4718

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