Malicious PDF — malware analysis report

Static analysis result for SHA-256 48b3cceb255bd5ae…

MALICIOUS

PDF

76.2 KB Created: 2021-04-03 15:03:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3cb5e3166e17ddb4b081e5a462f58550 SHA-1: dc9ca7f7a742e8ad948084f1751fecc621b5e374 SHA-256: 48b3cceb255bd5ae4204663177748d7662a2c07b0d4b0af772de5c9ad5b10154
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 0.9995

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://dugedepap.ru/strik?utm_term=brother+hl+2040+resetleme PDF link annotation
    • http://uaportal.site/enlace_molecular_sigma_y_pib5n97.pdfIn PDF document text
    • https://fuvenaxumegiga.weebly.com/uploads/1/3/3/9/133999500/lixoboze-pemotofiwowe-pevedorekixime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393790/normal_603f1193f378f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367903/normal_604f3b66d77ad.pdfIn PDF document text
    • https://tusixifowidafoj.weebly.com/uploads/1/3/1/4/131437116/xexolifezodijezebib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417419/normal_604a851f601f5.pdfIn PDF document text
    • https://xamilugalaw.weebly.com/uploads/1/3/5/3/135325617/2144273.pdfIn PDF document text
    • https://xixasoxi.weebly.com/uploads/1/3/5/3/135324484/4196061.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422877/normal_5fff9a53d3a27.pdfIn PDF document text
    • https://nibebelijatod.weebly.com/uploads/1/3/1/4/131452937/wobajojofejero.pdfIn PDF document text
    • http://3203epworthcres.com/931620023507jmzw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393016/normal_60601178afc9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417315/normal_6036a15fb2527.pdfIn PDF document text
    • https://rexekimat.weebly.com/uploads/1/3/4/0/134017736/ceacbc9eecfe.pdfIn PDF document text
    • https://vemosigexirapi.weebly.com/uploads/1/3/4/3/134387812/8362404.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421214/normal_6045c9c49f00e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422637/normal_60164ab415dec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tagozenumuzem.rf.gd/74138706828.pdfIn PDF document text
    • http://pugaxezijulub.rf.gd/12591669569.pdfIn PDF document text
    • http://laxizal.epizy.com/comparing_horizontal_and_vertical_integration_worksheet_answers.pdfIn PDF document text
    • http://niwakilapiso.rf.gd/2004_blue_ford_mustang_mach_1_for_sale.pdfIn PDF document text
    • http://jagodadevigusef.rf.gd/welino.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_off0000e7f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F7 5128 bytes
SHA-256: 6d6357f9f5c1d7c600bc37995ad892d2ac412615099892b6a1ac1f76d9e6d26b
font_01_sfnt_off0000f942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF942 12520 bytes
SHA-256: 618abac83d5c06ec636483fe8407cc87ffb3348679140a7972afbaa0033144c5

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