Malicious PDF — malware analysis report

Static analysis result for SHA-256 93f7575e811d2da9…

MALICIOUS

PDF

77.3 KB Created: 2021-03-21 03:52:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b515a30c08478704115d4014388332e7 SHA-1: 41ed261e452494272ef587e11be7d4b8330f7c05 SHA-256: 93f7575e811d2da9ef6663b93f2c4b66024556b1605a9565d0cee570069d96f5
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file uses a lure related to a 'weekly schedule template free' to entice users. It contains an external URI and a redirector link pointing to 'https://bologen.ru/wix?keyword=weekly+schedule+template+free', which is likely part of a phishing or malware distribution scheme. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/wix?keyword=weekly+schedule+template+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4411481/normal_5feb1ccde843b.pdfIn PDF document text
    • https://cdn.sqhk.co/toromerepowa/hiZgfhe/asteroid_almost_hitting_earth_october_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/7ifhFgh/xurese.pdfIn PDF document text
    • https://cdn.sqhk.co/kerutadit/7ii4jhu/nixudepuzasagevef.pdfIn PDF document text
    • https://cdn.sqhk.co/waxolulum/yje0bmh/31023647881.pdfIn PDF document text
    • https://cdn.sqhk.co/parikozug/jhehcxf/joplin_high_school_calendar_of_events.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458621/normal_603aa0281c3f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426267/normal_5fda473670ddd.pdfIn PDF document text
    • http://tinesemexogo.mygamesonline.org/how_to_record_message_on_uniden_cordless_phone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416305/normal_5fdfd6b13560f.pdfIn PDF document text
    • https://cdn.sqhk.co/bodevoposuji/ricFicZ/bloody_roar_extreme_xbox_iso.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/9ie5gg1/lethal_performance_phone_number.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374520/normal_60435f87364b2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5927e07a-0580-4549-813a-6f620aa45e50/machine_learning_and_data_science_with_python.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/476cabca-88be-4655-a57d-ffe69e3ce1a1/53783451189.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dbe5338-38a3-4cb5-87fb-ba246fc355e1/how_to_fix_paper_jam_in_epson_printer_l220.pdfIn PDF document text
    • http://pekomuvave.myartsonline.com/french_irregular_verbs_conjugation_avoir_passe_compose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66659cba-3e39-4602-b61d-043fe1e86fb8/felidiwol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7a5d214-d128-4f08-9e1a-b7934ed9a9d7/how_do_you_sing_happy_birthday_in_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e18549d2-6a36-42d9-b95d-24ffd8a059c8/19707141039.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_off0000f0cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CF 5576 bytes
SHA-256: d30adb2004b58869424b0f8f2dba6525cd332a66c5cadd4cd4632d83b6982c53
font_01_sfnt_off000103b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B4 10740 bytes
SHA-256: 337fcac1126458208bfdb0f83c7679676be36c6f5bf35cd3d49d844820afd545

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