Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa191afdaafb2375…

MALICIOUS

PDF

80.3 KB Created: 2021-03-10 11:54:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 79adb103036845f333e5484699c698bf SHA-1: fcd0fb2c2c2de763e1aef5dbd4cadc7ffca30181 SHA-256: fa191afdaafb2375cc64693c8c67249ee17bc304b9c0e56d6604a00ffa9c1673
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that acts as an SEO redirector, likely intended to lead the user to a malicious download disguised as a 'Gfl deep dive guide'. No scripts were extracted, but the PDF structure and embedded URI strongly suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://kuzutuzo.ru/wix?keyword=gfl+deep+dive+guide PDF link annotation
    • http://filozajerezabi.getenjoyment.net/xazetobex.pdfIn PDF document text
    • http://laludinemolat.sportsontheweb.net/drawing_tutorials_for_beginners_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419452/normal_603ec4c36fe5d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467571/normal_5ff9f55c725a2.pdfIn PDF document text
    • http://govuxojikasumot.scienceontheweb.net/75433052252.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bakenexiradofo.epizy.com/76601134155.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/galvanised_corrugated_roofing_sheets_leicester.pdfIn PDF document text
    • http://mimodiko.epizy.com/adverbs_of_intensity_worksheet_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/80048626248.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/36308618249.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/jason_and_the_golden_fleece_greek_mythology_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac870d21-a43e-4ad2-a223-2e3b13bc9105/can_you_row_on_a_bowflex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17e2e3ba-150f-4525-b722-f2e46af3cc3b/how_do_i_connect_my_plantronics_headset_to_my_office_phone.pdfIn PDF document text
    • http://lexojowal.epizy.com/happy_birthday_music_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/pukobixatewi.pdfIn PDF document text
    • http://zisukuvi.atwebpages.com/how_to_cancel_adobe.pdfIn PDF document text
    • http://kulexeg.rf.gd/finite_automata_tutorial.pdfIn PDF document text
    • http://nesitojogosew.epizy.com/dias_festivos_2020_segun_ley_federal_del_trabajo_mexico.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/kurefuxifesezaxijukolurij.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/munawitotavalinuvejo.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/vakimitiw.pdfIn PDF document text
    • http://lawaxisagiwog.atwebpages.com/integral_of_ecosxsin2x.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/monster_hunter_switch_axe_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fc99588-5577-4765-bbf5-7f77a071e1a2/5416353298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3a59e91-e09e-4695-a3d3-a59a21111c52/5473606374.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_off0001002b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1002B 4816 bytes
SHA-256: 836724e75bc31d80e6566827fb2178d6f5354c343b60aaa1584230f21dd59c0b
font_01_sfnt_off000110b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110B9 10204 bytes
SHA-256: da64703b2e2b88c40bc1741aef4c3875a2d5f56cc6a4246e4e47bee3a8565329

Open this report in the interactive analyzer, or submit your own file for analysis.