Malicious PDF — malware analysis report

Static analysis result for SHA-256 09f23b19ac05a83a…

MALICIOUS

PDF

71.7 KB Created: 2021-06-09 12:19:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 26075cf3ae14662f68ca8be078943246 SHA-1: c8958204e866314ee9483986e85cce04c0cbec6f SHA-256: 09f23b19ac05a83a1a36b06f5468e107222572816dbae132648c5cffac1f6e1d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links, many pointing to disposable hosting, and one prominent URL suggesting a lure for 'Rocket League apk android'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing attempt to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://krisoc.ru/pbw?utm_term=rocket+league+apk+android PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416653/normal_606aeb41ae0fa.pdfIn PDF document text
    • https://mabajiluvepe.weebly.com/uploads/1/3/1/4/131409333/taraf-tijodatojoma.pdfIn PDF document text
    • https://kazefapakoj.weebly.com/uploads/1/3/4/6/134644741/vusiremefulud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426697/normal_5fcf5842046bb.pdfIn PDF document text
    • https://xasibegofijuga.weebly.com/uploads/1/3/4/7/134731363/suvojujeva.pdfIn PDF document text
    • https://kazusabetife.weebly.com/uploads/1/3/5/3/135318045/bezuva-petesup-walikavek-gosupifunitoxiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pefagisunel.pbworks.com/w/file/fetch/144767157/97167474290.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56992e23-3b52-422c-bf2f-4b95d6db392c/la_gallina_degollada_resumen.pdfIn PDF document text
    • http://pudamalulera.pbworks.com/f/39664671048.pdfIn PDF document text
    • http://kokoxudalux.pbworks.com/f/printable_color_pages_for_kindergarten.pdfIn PDF document text
    • http://nugewil.pbworks.com/f/89563659973.pdfIn PDF document text
    • http://jeveriwilum.pbworks.com/w/file/fetch/144600387/goxedib.pdfIn PDF document text
    • http://barumena.pbworks.com/w/file/fetch/144457833/manual_de_taller_ford_ecosport_2005.pdfIn PDF document text
    • http://pobonagul.pbworks.com/f/silk_road_dbq_answer_key.pdfIn PDF document text
    • http://bowawesup.pbworks.com/w/file/fetch/144640845/vidmate_apk_purana_version.pdfIn PDF document text
    • http://wigiwopajuke.pbworks.com/f/6475643372.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db25efa4-6946-434b-a2ae-a0916c90da3e/2014_honda_civic_si_coupe_owners_manual.pdfIn PDF document text
    • http://mapijakemifo.pbworks.com/w/file/fetch/144467526/how_to_restore_mxq_box_to_factory_settings.pdfIn PDF document text
    • http://sirazumebow.pbworks.com/w/file/fetch/144905466/arabalar_imek_hz_apk_indir_son_srm.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1A 5136 bytes
SHA-256: 0ff19e6ee4e9b07e35def8f74ef19d08b67e1b99a96946d8460a641c8c48aecd
font_01_sfnt_off0000ecac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAC 10900 bytes
SHA-256: dda2b9636c3066d1dd8796f85fa148425d717ece18fa183746f40b3dd75e7381

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