Malicious PDF — malware analysis report

Static analysis result for SHA-256 732ecdc1ab127c44…

MALICIOUS

PDF

79.7 KB Created: 2021-03-24 19:28:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 0f24ad5d3f9bfb58c1a60c31e313e83f SHA-1: b2b527a8f4f990dc9917ceb976cf7106867d35ff SHA-256: 732ecdc1ab127c440c815b4d28d1a2299f8d1c2e47917bfe86c3adc11e521f9e
134 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs, including one pointing to 'mezovuduw.ru', suggesting it acts as a lure for phishing or malware distribution. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick the user into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://mezovuduw.ru/wix?keyword=kaimuki+library+book+sale PDF link annotation
    • https://xolesozetenosox.weebly.com/uploads/1/3/1/0/131070434/b845d91e787f63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444104/normal_5fdb8e0d25277.pdfIn PDF document text
    • https://lixepugoguzezum.weebly.com/uploads/1/3/4/1/134132265/1116795.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489601/normal_6006489a388d8.pdfIn PDF document text
    • https://lepepapiminokuj.weebly.com/uploads/1/3/4/4/134493398/e5f2085173.pdfIn PDF document text
    • https://wudajelenap.weebly.com/uploads/1/3/4/4/134470879/1605207.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427793/normal_6018ac6892350.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474977/normal_6043852be3c34.pdfIn PDF document text
    • http://wurigebajufopo.22web.org/politique_budgtaire_dfinition.pdfIn PDF document text
    • https://kerawidirara.weebly.com/uploads/1/3/4/7/134746453/8493965.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/2fe5eb62-47b1-40c8-b220-bd97e10a41c1/northouse_leadership_book.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/30659973249.pdfIn PDF document text
    • http://tumanababaxa.epizy.com/compare_and_contrast_the_structure_of_arteries_veins_and_capillaries.pdfIn PDF document text
    • http://lebodixo.epizy.com/3648685894.pdfIn PDF document text
    • http://vowukexakajan.rf.gd/havoc_demon_hunter_guide_pvp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a432dc4f-7f4f-4aea-b9de-9ffafb3124a5/lolufoxolomugowag.pdfIn PDF document text
    • http://wulisafule.epizy.com/duzoferomubaziwowo.pdfIn PDF document text
    • http://wunorewotiv.epizy.com/64306431727.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/tajobafuvukoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe4ec917-7fdd-4127-a6e8-ea27a23fe639/pair_motorola_baby_monitor_to_camera.pdfIn PDF document text
    • http://xafalelo.rf.gd/17680341258.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/85864258260.pdfIn PDF document text
    • http://lupumik.rf.gd/boyz_2_marathi_movie_filmyzilla.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_off0000f7ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FF 5108 bytes
SHA-256: a2acac0c739cae59ec664268d518c088904773a46e879628db53d54ba25e9d87
font_01_sfnt_off0001094c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1094C 12128 bytes
SHA-256: d5c896e9397386ee5bde3920c8c9de28b3ea3407a42ffe2a7353e671644a27f1

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