Malicious PDF — malware analysis report

Static analysis result for SHA-256 e239d863e5e99e70…

MALICIOUS

PDF

85.7 KB Created: 2021-04-18 02:31:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 954fe3b5d892adcb0ed38915babcfaff SHA-1: df76129a9deb824743c5e30340d38debcb0a7355 SHA-256: e239d863e5e99e70de3940a216c4a4e46ccc2c4bc1797734fc9529dcc7e68ff9
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/strik?utm_term=jeu+de+carte+a+2+simple+bataille In PDF document text
    • https://static.s123-cdn-static.com/uploads/4403805/normal_5ff75f81f10a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370265/normal_604eee679ac0d.pdfIn PDF document text
    • http://canonsburglake.org/45171636989gsgod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427077/normal_6016fa13a1305.pdfIn PDF document text
    • https://cdn.sqhk.co/bujavenizake/cngcpjd/67492214185.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416513/normal_602ef872146fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502721/normal_5fdd5aa228717.pdfIn PDF document text
    • http://blognews.top/design_it_girl_fashion_salon_game_downloadofegy.pdfIn PDF document text
    • https://cdn.sqhk.co/rexazileka/dGjcaVT/catchers_apk_day_indir.pdfIn PDF document text
    • http://gooddevice-online.com/lord_of_the_rings_theme_piano_sheet_music_freeh2u1f.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/lupebesu/the_paper_menagerie_character_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/giramolanosa.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/96824769348.pdfIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/febagokomuwav.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/xenyx_x2442usb_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/pitiwotomiforazegeloke.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/97661163299.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_off00010c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C75 5480 bytes
SHA-256: 1d27e2e81bd2aa8b570f7a515297ab191b2d9c65b652593ff7dd284fc0cd7243
font_01_sfnt_off00011ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EF7 13104 bytes
SHA-256: 02d6a72bcbdf256dc5dd40389bd34e5abbf64784b8cb250368841e616d2b2b9b

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