Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ac5f1ab57c83012…

MALICIOUS

PDF

89.5 KB Created: 2021-01-08 15:57:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: f31cf08b5d174a9892fe9fa2b0c59246 SHA-1: 3dcba6767b60a84b5209ac9b22bd89e8dc34ca9f SHA-256: 3ac5f1ab57c830125964e84701971422c0138c2f4fe14da588e906544e7ba54d
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support this assessment. Although no scripts were extracted, the presence of a malicious URL is sufficient to infer an attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ggtraff.ru/123?utm_term=next+food+network+star+episode+guide In PDF document text
    • https://cdn.sqhk.co/vovusupa/rjgijdt/vipozadanibovenotuz.pdfIn PDF document text
    • https://cdn.sqhk.co/segenapiza/dicyjec/basketball_shooting_game_21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462362/normal_5ff473d1c7304.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://uploads.strikinglycdn.com/files/1bb4fec6-ba9f-490d-a4ba-ea9fb002157b/51434738447.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56709831-1503-4bce-ab12-f325315279c2/20350122767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64caf1f6-7a7f-4b32-b082-2d5062d41f7e/27535447164.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/beamer_templates_overleaf.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/amritsar_shatabdi_platform_number_new_delhi.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/80124301328.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/bubble_shooter_game_for_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/8747229422.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/plot_map_for_to_kill_a_mockingbird.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/17018412787.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/les_sept_merveilles_du_monde_antique.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/8645315043.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_off0001130a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1130A 5252 bytes
SHA-256: 0a58f2203adb6dcf4a7c2b9fafd2533cac7be4285d25115bf8b22d7f54a523d6
font_01_sfnt_off0001251a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1251A 10984 bytes
SHA-256: f25e5b06f03b75b433514597ca5ca5990746897f3617cb59663281f9ac49b806
font_02_sfnt_off00014a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A48 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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