Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc99dfa09a6395f…

MALICIOUS

PDF

75.7 KB Created: 2021-02-07 10:24:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 864d4fb0f49fbbc962b98e3c442d2352 SHA-1: 9e63aab0c4467c09fd9884fc39477c9fc5b08cbc SHA-256: edc99dfa09a6395fa3282eb1dd9b2953815594f09623e9b54ffa1c6d75e1d5cd
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics and a ML classifier as malicious. While no scripts were explicitly extracted, the presence of external URLs and the ClamAV detection strongly suggest a phishing or malware distribution attempt. The document body is heavily obfuscated, preventing a clear understanding of its specific lure.

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://bologen.ru/123?utm_term=brix+testing+equipment PDF link annotation
    • https://cdn.sqhk.co/fijajiles/TECCBQT/jenijisup.pdfIn PDF document text
    • https://cdn.sqhk.co/vilitemeru/fgdijVV/92268996421.pdfIn PDF document text
    • http://beach-fruit.fun/583488026829u45k.pdfIn PDF document text
    • https://cdn.sqhk.co/mojupesonon/jdJ9NBM/basketball_easy_free_throw-_choco-_to_throws.pdfIn PDF document text
    • http://supportcopyright.net/ssc_online_marksheet_gujaratooqwh.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/5poywjW/first_words_project_parent_portal.pdfIn PDF document text
    • https://cdn.sqhk.co/momogajopi/ifSigge/on_road_crossers_for_sale.pdfIn PDF document text
    • http://extrameets.fun/dj_sound_effects_free_download_sirensdz210.pdfIn PDF document text
    • https://cdn.sqhk.co/rakuvonume/RGC1DEX/nhl_store_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/ninubisidire/Za8GuuG/worship_songs_of_praise_and_thanksgiving.pdfIn PDF document text
    • http://sberin.xyz/jujarose40v1u.pdfIn PDF document text
    • https://cdn.sqhk.co/duzupafuj/ibfhjhd/84588061024.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/levumoduf/vegamosarasi.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/54025692368.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/beautiful_images_of_babies.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/responsive_ecommerce_template_bootstrap_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/fonibekisiz.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/xepujezoko.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_off0000eb15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB15 5140 bytes
SHA-256: 4599f265f1766ca03188b349daf685bb201b115e3fc41bcd13a396925d29862c
font_01_sfnt_off0000fc88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC88 11004 bytes
SHA-256: d03c23aad5b2e1cb34e62d1f872a5d16a95574504af80bb02f77e4715be3af94

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