Malicious PDF — malware analysis report

Static analysis result for SHA-256 202318708de584f4…

MALICIOUS

PDF

81.5 KB Created: 2021-02-25 00:58:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: be4b83ff79c4f2948729647260ddf09b SHA-1: 50e65904b0efb553975c755489aeee44931f5785 SHA-256: 202318708de584f4943e17e04d6949b794efd3d36d8984483ccdf185096cbdb4
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 URI pointing to 'https://baarspo.ru/wix?keyword=california+driver%2527s+manual', suggesting a phishing or credential harvesting attempt. The document body, though heavily obfuscated, contains metadata related to wkhtmltopdf and a date, but no clear textual lure. The presence of multiple unknown URLs further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wix?keyword=california+driver%2527s+manual PDF link annotation
    • https://cdn.sqhk.co/lodikorep/iwligii/virgin_mobile_ksa_recharge_code.pdfIn PDF document text
    • http://moneyindia.site/piwigesisoea2cj.pdfIn PDF document text
    • http://lami-lashes.site/orthographic_grid_paperf2999.pdfIn PDF document text
    • https://cdn.sqhk.co/bopibege/vFlgiqw/gutim.pdfIn PDF document text
    • http://tcerkovniekupola.space/69577447125yczex.pdfIn PDF document text
    • http://lalixodurabemu.iblogger.org/trigonometry_sides_and_angles_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/xiteduva/jbxibhh/50962159235.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/how_to_install_extend_to_fit_forward_facing.pdfIn PDF document text
    • http://thestablestl.com/jebozuxituzelawefofivio0mog.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/crafting_and_executing_strategy_the_quest_for_competitive_advantage_concepts_and_cases_22e.pdfIn PDF document text
    • https://cdn.sqhk.co/bivosozos/ghieigj/parachute_pants_outfit.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/donukadizolin/57075250219.pdfIn PDF document text
    • http://gaxilitexu.onlinewebshop.net/68009882440.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/70087851232.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/assam_police_tribunal_answer_key_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/common_proper_and_collective_nouns_worksheets.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_off00010436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10436 5052 bytes
SHA-256: 97bf03441bde7c694438850baed1d62f47f2ef18da1d48dec737d387c7f9ded5
font_01_sfnt_off0001155e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1155E 10276 bytes
SHA-256: 04fc9355b8aabc41316b382f80343c74e567ddb8d9e976cc5e341a914a52f21e

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