Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc0861b4a18092fc…

MALICIOUS

PDF

86.3 KB Created: 2021-02-14 03:50:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: cd86ca1f92c660b7d37d044845947236 SHA-1: 18abd44500a4bde983ddcb00b4eb28f5b2d1094b SHA-256: fc0861b4a18092fc30b400238d76f0143bd398e161bdd316b56bfcd9e419dca4
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URI points to a URL that appears to be part of a phishing or malware distribution scheme, disguised with terms related to 'apk hack'. No scripts were extracted, but the presence of external URIs suggests the document is designed to redirect the user to a malicious site.

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://leonvi.ru/123?utm_term=my+life+in+new+york+apk+hack PDF link annotation
    • https://cdn.sqhk.co/lolatonuvesa/pcZkwgf/emergency_dental_near_me_medicaid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482418/normal_5fd1dedf45476.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481830/normal_600e8b8652527.pdfIn PDF document text
    • https://cdn.sqhk.co/lelabepena/hhQJgdU/goalrilla_basketball_hoop_parts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462035/normal_5fff4c995a0e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484618/normal_5ffccf71a5700.pdfIn PDF document text
    • https://cdn.sqhk.co/tisewesir/7XAihRB/27140195579.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453741/normal_5fd37705f26ce.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/pusixa/cg_song_dj_syk.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/5999257982.pdfIn PDF document text
    • http://wowawese.rf.gd/duzonunizirifuloguvuna.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/95494650512.pdfIn PDF document text
    • http://didoratanusej.rf.gd/zimifugu.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/97629327970.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/14401187658.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/62040346962.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/asrock_h110m-_hdv_manual.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_off0000fe2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2A 5188 bytes
SHA-256: e13b3e06cba780c5e418668ae12b27ca010741414b6f700fa71cac1b5090d3ca
font_01_sfnt_off00010ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF2 11200 bytes
SHA-256: 03952c5645ef4396058dc3e3677007b784500cd0564aff468e7d10a01b5b1570
font_02_sfnt_off000136ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136AD 16144 bytes
SHA-256: 8f8e757d902b0e242f45eb76ce85893f7f0d21f660c7def5fbb1d3312811fc83

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