Malicious PDF — malware analysis report

Static analysis result for SHA-256 8298e9ddabf04c16…

MALICIOUS

PDF

79.8 KB Created: 2021-03-09 12:09:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 603c262eca284ad59dd1837b8b8a695c SHA-1: 485c21fd700cbc051e89560c68ecdf820ed2e344 SHA-256: 8298e9ddabf04c1614c11b8977626988085286d649576d6d6dfc13d2496173cf
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious content. It contains numerous embedded URLs pointing to disposable domains and link farms, suggesting a phishing or malware distribution attempt. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating the document is designed to redirect users to potentially harmful sites.

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
  • 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://jumiwimov.ru/aws?utm_term=kenmore+500+dryer+parts PDF link annotation
    • https://naxizugopigonav.weebly.com/uploads/1/3/1/4/131408516/8493469.pdfIn PDF document text
    • http://ligugiban.scienceontheweb.net/better_than_before_book_download.pdfIn PDF document text
    • https://gofubemasuxa.weebly.com/uploads/1/3/2/7/132712405/7606231.pdfIn PDF document text
    • http://lapitubemexidi.mywebcommunity.org/breathing_techniques_for_gymnastics.pdfIn PDF document text
    • https://ketabanajav.weebly.com/uploads/1/3/4/7/134707818/734e8ae977a3.pdfIn PDF document text
    • http://reduslimer.website/kanchipuram_district_court_recruitment_application_formz4jjm.pdfIn PDF document text
    • http://kikababono.mywebcommunity.org/lopubedabetulewowa.pdfIn PDF document text
    • http://mebel-albero.ru/17038014383vdmx1.pdfIn PDF document text
    • http://faceit.su/tecumseh_engines_reviewssdmf0.pdfIn PDF document text
    • http://jadebey-x.com/how_to_download_music_for_free_on_computera5qn2.pdfIn PDF document text
    • http://memisada.mygamesonline.org/how_to_bind_flysky_fs-i6s.pdfIn PDF document text
    • https://ponebivilu.weebly.com/uploads/1/3/4/5/134505494/4706760.pdfIn PDF document text
    • https://wokogosomexar.weebly.com/uploads/1/3/5/3/135322546/jitajufozegup_jijemuxuvafufu.pdfIn PDF document text
    • http://losinglotterynumbers.com/how_to_use_quizlet_for_test_answerss7pgp.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/58b0761b-dfd9-41ac-9b6f-69f3494fe339/asus_rt_ac66u_b1.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/short_paper_format.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/girl_bestie_status.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/improvement_plan_template_word_free.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/target_toddler_bed_sheet_sets.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/40007558425.pdfIn PDF document text
    • http://timojodabemisux.myartsonline.com/besluit_kleine_herstellingen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28e055f1-b1fb-459e-97e9-1e0fd4010520/how_to_orbit_sprinkler_system.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/22990003140.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdb00060-1610-4b2c-94bd-741a0d7eb341/sony_stereo_receiver_str-dh130_manual.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_off0000f981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF981 5408 bytes
SHA-256: 026f45e34fb9b83255c842f1257f2bb150dcc918e8edee2e98a43300b10815cc
font_01_sfnt_off00010bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BDE 11140 bytes
SHA-256: 4d299c3f5d4876c296d277ff88c71f515fdef7d7f4784a952df8462df15eb111

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