Malicious PDF — malware analysis report

Static analysis result for SHA-256 52e08463fa7a9a1a…

MALICIOUS

PDF

79.6 KB Created: 2021-04-05 14:40:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 847dde9d8e0eee19c55af1820d6b64c2 SHA-1: 2d3ba9ff04993bee16b9551600af1eb91f80b0ea SHA-256: 52e08463fa7a9a1a58611ef5ffec222ba48829f391406252ac4f88556080b39b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/strik?utm_term=what+bait+to+use+for+catfish+uk PDF link annotation
    • https://nutifikidejuz.weebly.com/uploads/1/3/4/3/134347692/00b64882c37101.pdfIn PDF document text
    • http://tupakewufitid.iblogger.org/que_es_el_realismo_juridico.pdfIn PDF document text
    • http://mudubafap.iblogger.org/rirorikojilekon.pdfIn PDF document text
    • https://poxatekegevu.weebly.com/uploads/1/3/4/7/134753674/lebaduxunakeme-fotojuzud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477620/normal_6023d89651988.pdfIn PDF document text
    • http://rilotelexewobos.iblogger.org/26147396652.pdfIn PDF document text
    • http://mareson.getenjoyment.net/alan_walker_faded_piano_notes.pdfIn PDF document text
    • http://tixaman.scienceontheweb.net/paulo_coelho_libros_adulterio.pdfIn PDF document text
    • http://melofuwi.getenjoyment.net/76812138532.pdfIn PDF document text
    • https://divetuguwopad.weebly.com/uploads/1/3/0/7/130739619/sudamegatogaw.pdfIn PDF document text
    • http://papawugamajube.mygamesonline.org/bojizogumitatep.pdfIn PDF document text
    • https://larekupexog.weebly.com/uploads/1/3/4/8/134884129/6823562.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410674/normal_600becbd19840.pdfIn PDF document text
    • https://suxokigivulumu.weebly.com/uploads/1/3/4/4/134479742/sarefil-fepilipozute-sozomo.pdfIn PDF document text
    • https://nazixusa.weebly.com/uploads/1/3/4/3/134363102/9428017.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408174/normal_60033f351cac4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/zogumuwadobatovokem.pdfIn PDF document text
    • http://nejesezape.myartsonline.com/lead_lag_compensator_design.pdfIn PDF document text
    • http://sijaxulo.rf.gd/discuss_personality_development.pdfIn PDF document text
    • http://pevivudawof.epizy.com/25029002746.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/bikadobazanug.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/84376425391.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/23537779886.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_off0000f9f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F6 5156 bytes
SHA-256: 0900e8ca6f25868851d48a13113906a996008701e2d09fc590a992ec5749d18b
font_01_sfnt_off00010b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B88 11268 bytes
SHA-256: 82e3d28d87b11f29be410bc04accdc90cfdfd1b19823353567d4a5a3a9ad9239

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