Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff7aefff2becdb46…

MALICIOUS

PDF

79.4 KB Created: 2021-03-19 05:13:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 182433979cef3f1f7f8afc7f8e1bbac6 SHA-1: 1f6c32a25ce257e5d2d0fc5963f7f2d60e56fda5 SHA-256: ff7aefff2becdb46530b02a38cdf9c15a4947ad6255707bf8767f99ad517a3d2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a common tactic to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ponafet.ru/wix?keyword=create+out+loud+iron+on+print+and+transfer PDF link annotation
    • https://cdn.sqhk.co/gajerivab/ihm1ie5/bhojpuri_video_hd_gane_song_free.pdfIn PDF document text
    • https://cdn.sqhk.co/guwaloxipete/jgio0Hx/51265226140.pdfIn PDF document text
    • http://bbflowers.net/78595579338pynxv.pdfIn PDF document text
    • http://burrrhey.tech/best_graphic_design_books_freenjauy.pdfIn PDF document text
    • http://jexekiraj.sportsontheweb.net/nilafu.pdfIn PDF document text
    • http://usechambre.xyz/terulexusugiqi5k3.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedepobe/fhjie8E/safety_harness_inspection_checklist_template.pdfIn PDF document text
    • https://cdn.sqhk.co/mafozerekat/Dsl0hac/alcestis_euripides.pdfIn PDF document text
    • http://fuxukibegub.iblogger.org/wunenenogarivat.pdfIn PDF document text
    • https://cdn.sqhk.co/xurawupo/kielkKr/wereperovoxusava.pdfIn PDF document text
    • http://astrology-personal.online/waxigobugewudac6r.pdfIn PDF document text
    • http://nanolenka.xyz/70016077841fynzs.pdfIn PDF document text
    • https://cdn.sqhk.co/xaselavub/aMibfgg/fusigamimilugal.pdfIn PDF document text
    • https://cdn.sqhk.co/dofofigeniso/DgeMwgf/katorurozexizobete.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/WhcgdzW/talking_pretty_girl_apk_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pusaxedufa.rf.gd/66230907689.pdfIn PDF document text
    • http://movuzawizigevej.myartsonline.com/potajofidamirezomosilu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d7658ad-6779-46f2-ab3d-dabdfe8e9082/mitologia_griega_y_sus_dioses_y_semidioses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef44c56f-8f17-40c4-85a4-941db8692e13/hayward_swimpure_plus_reset.pdfIn PDF document text
    • http://xukosabezapo.rf.gd/definicion_de_energia_eolica.pdfIn PDF document text
    • http://dowivadekituf.epizy.com/ikea_bed_frame_with_storage_assembly.pdfIn PDF document text
    • http://lusiromipu.epizy.com/pro_points_calculator_app_android.pdfIn PDF document text
    • http://tanonarimunal.myartsonline.com/wunovufabof.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_off0000f636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF636 4940 bytes
SHA-256: 4c06513b72a3f36ad1a6973bc25342c107ec0fabc4057b40d72c6a7031d52c2d
font_01_sfnt_off0001070a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070A 11640 bytes
SHA-256: 98a1f35d1584e5c8a9102ef3ad4dac9a0c1282318a2f47705ca3ff14d45b5840

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