Malicious PDF — malware analysis report

Static analysis result for SHA-256 44568fb7a6a7da8b…

MALICIOUS

PDF

84.1 KB Created: 2021-03-11 18:45:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: c33f9abdbe5b92a145633f2091ef9ef3 SHA-1: 5e3bd47351279207adbca36a77cb4085c02c50e0 SHA-256: 44568fb7a6a7da8bc2ec611001676156323bcbb7b004c28e165e55bc99b83b40
136 Risk Score

Malware Insights

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

The PDF contains a high-severity heuristic indicating it's an SEO redirector used for phishing, linking to the URL https://xajibur.ru/wix?keyword=periodic+table+seterra. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were extracted, the PDF structure and embedded URLs point towards a phishing attack designed to lure users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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
  • 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://xajibur.ru/wix?keyword=periodic+table+seterra PDF link annotation
    • http://creditreportus.info/the_magic_school_bus_rides_again_in_the_zone_123moviesskpmr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445877/normal_6045bc1098de5.pdfIn PDF document text
    • http://dfwshootersupply.com/best_probability_and_statistics_book_for_engineersltjku.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/dtqiaFh/gladiator_glory_egypt_game_download.pdfIn PDF document text
    • http://vitrinachel.ru/430256173799s8w8.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/gfjb6gg/reeva_oscar_pistorius_wife.pdfIn PDF document text
    • https://cdn.sqhk.co/lididiregi/bjejhNu/76961809353.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402948/normal_60194cf1d37f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386074/normal_60061f16c2a60.pdfIn PDF document text
    • http://guitar.su/english_to_french_technical_dictionary7yiqu.pdfIn PDF document text
    • https://cdn.sqhk.co/daborofus/wn1gjjh/i_love_you_coloring_pages_for_adults.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369774/normal_5fe9b69f55184.pdfIn PDF document text
    • http://msertis.xyz/rupukarotabida6x2r.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/bakoloj/57891172737.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3c9cee2-24aa-4baf-8e4e-0c6cb292fb02/35146654968.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/answer_me_jesus.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/flight_radar_24_pro_gold_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbe3e790-3558-47d4-8a24-447a420311fb/who_are_the_4_main_characters_in_the_tempest.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/3509249533.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2af9d93-a8e4-4ad7-82b4-6aa44d5e5779/ashton_drake_monkeying_around.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/free_fitness_flyer_template_publisher.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/3249448469.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/dsst_lifespan_developmental_psychology_study_guides.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/win_10_update_manually.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/gufopuvorijoketivegufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba31d648-1b82-4032-a9d9-a5fc2aec83a9/y_x2-4x1_vertex.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_off0001012c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1012C 4756 bytes
SHA-256: d2074a7b189f5630b96411dc532276de1eefc5f2e1f05ce2ddc4438532ab567c
font_01_sfnt_off00011155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11155 10404 bytes
SHA-256: 4fe3179e7e71e4c48024365007c63e020549e8f27fa83c887dd1c5079c95235e
font_02_sfnt_off0001349b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1349B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176