Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb15cbb05cc33ff6…

MALICIOUS

PDF

84.0 KB Created: 2021-05-23 19:02:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a2fc7e1ed01143cdf9872c64e68db796 SHA-1: 5726ec09670faedfd00a154dc37ced18abfcd529 SHA-256: eb15cbb05cc33ff6770c410df00559aa15e4062233ce5aa8b7b332c33785af88
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://pelibifir.ru/strik?utm_term=recargar+saldo+gratis+telcel+mexico PDF link annotation
    • https://wavuzujez.weebly.com/uploads/1/3/1/4/131406867/kuxerubitibevajedoni.pdfIn PDF document text
    • https://xonarupitowij.weebly.com/uploads/1/3/4/6/134617661/3460133.pdfIn PDF document text
    • https://tezifotunojoke.weebly.com/uploads/1/3/0/7/130776805/nifawuwadexonijis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367960/normal_606df71fa52a1.pdfIn PDF document text
    • https://xekawipafamut.weebly.com/uploads/1/3/4/3/134328312/4541846.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387417/normal_604f6de35c470.pdfIn PDF document text
    • https://wivusogonelom.weebly.com/uploads/1/3/5/3/135310870/bcd2b40cf52.pdfIn PDF document text
    • https://kurebefa.weebly.com/uploads/1/3/1/1/131164205/wudega-danej.pdfIn PDF document text
    • https://lezexoxutipeb.weebly.com/uploads/1/3/4/4/134462335/webalokubiwogap_raziruvopa_fumafom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481695/normal_5ff90163c4ba3.pdfIn PDF document text
    • https://jakilirimilibev.weebly.com/uploads/1/3/4/8/134862861/2681776.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/6d6dc8bc-0c28-49dc-b118-3ca10574c12d/98679826687.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/30899674255.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/vizio_e65-c3_review.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/15219635649.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/aviary_myna_audio_editor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5da8925f-d289-410d-8e44-a5fb048fc93d/what_is_social_contract_theory_ethics.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/avatharam_video_songs_telugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83c64b14-2b7d-4320-8c8f-33c853c10561/download_ayat_al_quran_juz_1_sampai_30.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8f7e326-5959-4b36-b5a7-2641a3a1da0b/what_is_baby_step.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B4 5016 bytes
SHA-256: 9039e86da07b21514b606c00b6d684878777daf467b96691692cb55a1dacb180
font_01_sfnt_off00010acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACB 12208 bytes
SHA-256: 70a2337e504ff9169402f0d197d783720c81c7c33cfcf0926a9ae15685a6cc5b
font_02_sfnt_off000132f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132F0 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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