Malicious PDF — malware analysis report

Static analysis result for SHA-256 50d9bda1d8724792…

MALICIOUS

PDF

80.8 KB Created: 2021-02-13 16:41:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3a0c8ee2a995935c0e6e3e8eccbe417b SHA-1: 0ea7139e7838c196d489dd56961e6fffa20b6fad SHA-256: 50d9bda1d87247929a25cfcecf44dea2c296ab7aca6f1044fc79843ed15b34d1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to reference a product, suggesting a lure to trick users into clicking the malicious link.

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://bologen.ru/123?utm_term=baby+activity+table+with+walker PDF link annotation
    • https://cdn.sqhk.co/seworani/jhifgE6/music_video_editor_app_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/pofaxiniraz/jaSEtGE/electronic_components_dealers_in_singapore.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479470/normal_60206fb919845.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/ojaDjcu/pamogedogikekasema.pdfIn PDF document text
    • https://cdn.sqhk.co/raxulaxesob/L0jfPgf/58195468932.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476941/normal_5fd043e019b40.pdfIn PDF document text
    • https://cdn.sqhk.co/xekejegixawo/9lZi0cW/luke_bryan_build_me_a_daddy_contest.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416930/normal_601a9bdf3c74e.pdfIn PDF document text
    • https://cdn.sqhk.co/joremeve/chhceyk/line_comics_app_apk.pdfIn PDF document text
    • http://wajobok.iblogger.org/how_to_answer_willingness_to_relocate.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/gh9ihhc/tafafodunopiterebebafad.pdfIn PDF document text
    • http://fodamibokaf.66ghz.com/fashion_nova_white_formal_dresses.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/tuxexi/segmented_bar_graph_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/65853117562.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/4960727257.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/duweguwigudizodes.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/liziw.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/93795906343.pdfIn PDF document text
    • http://rodobokojezaga.epizy.com/gangster_full_movie_hd_filmywap.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC89 5216 bytes
SHA-256: 51c4585532533664817eedb47acdd3bbc0df6cf5f7715c1c2dfc4cbfe0f4baa6
font_01_sfnt_off00010e60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E60 11220 bytes
SHA-256: e266552990e50cf16056904fed86291a65077094ff6565970dd52c2c82617569

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