Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e742c5b9419057…

MALICIOUS

PDF

78.2 KB Created: 2021-02-16 00:16:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 78de7e076a045dcfd75662df27539a53 SHA-1: 3ffdc1e50216830529c785850d797dce0b05f05f SHA-256: e9e742c5b94190578fb4f5dbe138e44d592d3c74284569b3421777e32cbc861e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains suspicious links and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though obfuscated, references 'Jack Reacher Never Go Back Netflix', suggesting a lure to a malicious domain. The presence of external URIs and the ML classification strongly indicate an attempt to redirect the user to a compromised site for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://jacksth.ru/strik?utm_term=jack+reacher+never+go+back+netflix PDF link annotation
    • http://help-feedback-amzn6.xyz/15797633293jspcs.pdfIn PDF document text
    • http://ig-supportcenter.xyz/92079934830yyal8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414679/normal_5fe26c835b7d9.pdfIn PDF document text
    • http://visiblawty.com/chrome_remote_desktop_windows_100wciz.pdfIn PDF document text
    • http://csxmoney.info/accounting_balance_sheet_explanation7mdm0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417306/normal_6010aedf2fbba.pdfIn PDF document text
    • http://lnstagramcopyrigtservice.com/screenplay_dx_hd_media_player_1tbhks2q.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/sefiwegegagu/sivizokamadozasiva.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/yantam_marathi_song_video.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/avast_secureline_vpn_apk_license_key.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/grammar_activities_for_esl_students.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/vanozobimumo.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/labo_labo_sheet_mask.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/72416671971.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/sabamofipedilemasuzibuxug.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/54749132257.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_off0000e727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE727 5072 bytes
SHA-256: 7ff0a74120f202e4661b982cf3b7d9c484aeb71ce51ae60043e21d09b52a7658
font_01_sfnt_off0000f86d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86D 10916 bytes
SHA-256: 5c8c0fd1a8e4b5c00686acb3a9f97c39890cc78929ec28c806f8de45d9b6d4de
font_02_sfnt_off00011da0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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