Malicious PDF — malware analysis report

Static analysis result for SHA-256 649558fc00b9ff48…

MALICIOUS

PDF

79.3 KB Created: 2021-02-03 18:16:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a61855135ddad8c2aeb90e2b62a59033 SHA-1: 4f661b03e3aa295bed6673a241eadcd80a0cdf94 SHA-256: 649558fc00b9ff4804c0019d995b4c2ff879a4010ebb40da30a880020a342edc
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect users to malicious content.

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://crophysi.ru/123?utm_term=second+anniversary+gift+traditional PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413361/normal_6000823a85d14.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxafopagad/esCDghc/minecraft_download_unblocked_1._16.pdfIn PDF document text
    • https://cdn.sqhk.co/tikugosedik/Fiaw7d5/tank_strike_3d_war_machines_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/j3wijBH/wakuzuvurujejileme.pdfIn PDF document text
    • https://cdn.sqhk.co/zikonidenijo/zjdgggi/temple_run_2_games_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pekebugus/g6hagem/33302927196.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lanubili/mac_preview_annotate.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/56848843177.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/certificate_of_proficiency_in_english_2.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/letter_template_word_microsoft.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/glee_cast_season_6_songs.pdfIn PDF document text
    • http://faloboxodutak.epizy.com/71851872066.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/nebidujubegovijelizu.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/wezironipapufo.pdfIn PDF document text
    • http://xuduzunubedi.rf.gd/answers_in_genesis_vbs_2019_music.pdfIn PDF document text
    • http://tugojolowok.epizy.com/88964124639.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/aol_free_for_windows_8.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/13109831348.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEADA 5244 bytes
SHA-256: e9d8aa1ab99cbe687f371746c50301c43ac311cbfdbd90f24fdc2e32bf99fe72
font_01_sfnt_off0000fcb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB8 10872 bytes
SHA-256: fafee4da1a24cfb909b127144beb444e15dc8a3e91351f877cd9c09ffefef21f
font_02_sfnt_off000121f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121F6 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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