Malicious PDF — malware analysis report

Static analysis result for SHA-256 e764d1b58876603c…

MALICIOUS

PDF

111.7 KB Created: 2021-03-18 22:17:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: cd0da80b4401d9e2ef1faece4e23d12c SHA-1: 0fe1498c76cb2039420f5a94727738dc22771287 SHA-256: e764d1b58876603c107d91b1b5d211a18c7e39f74373426bb72716290d293db4
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to S3 buckets and other domains, indicative of a link farm or SEO spam operation. ClamAV and ML classifiers flagged this as malicious, specifically a phishing or trojan variant. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly suggest a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/wix?keyword=pretty+in+pink+parents+guide PDF link annotation
    • https://cdn.sqhk.co/negapevu/1siiijW/77098759380.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/apcbiiw/art_sculptures_for_sale_uk.pdfIn PDF document text
    • https://fekifefexil.weebly.com/uploads/1/3/0/8/130815726/kikiwij.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/jeoBhf0/70264567326.pdfIn PDF document text
    • https://cdn.sqhk.co/bitowiso/qE8hfYc/buxej.pdfIn PDF document text
    • https://rofizikijomosuj.weebly.com/uploads/1/3/4/0/134012810/ruvodobukezeviru.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/nafamaragisek/92515676960.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/josenof.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/bba_business_analytics_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/android_app_development_tutorial_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/eton_grundig_field_radio_review.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/sogonikikin.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/avast_uninstall_tool_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/fundamentals_of_accounting_bba.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/92156535913.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/bootstrap_form_builder_multiple_columns.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/66284777796.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/driver_atheros_ar5bxb63_windows_xp.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/rikodatogukiwura.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/52979856891.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_off0001684e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1684E 5036 bytes
SHA-256: 983c6bca648123b74efd9cadc69ff4263e942f1239c43b4a4480b187f183c395
font_01_sfnt_off00017976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17976 12936 bytes
SHA-256: e9b2a74cfdb18ca199819445466290c28bdb2c0396ef5274fe14b0a71dd229e2
font_02_sfnt_off0001a2c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A2C1 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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