Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a4e51fd22172a6…

MALICIOUS

PDF

72.6 KB Created: 2021-03-31 02:48:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 057de05c6c0f5d25bc042c7da02a21f4 SHA-1: 2cf5f9f27038de848a32ec3ce492238588bd4db5 SHA-256: 30a4e51fd22172a63605c6ec38a9b39cb4a72530d4c24cb05e658728868bb160
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 0.9997

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 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://druttle.ru/wix?keyword=korg+kronos+2+manual+pdf PDF link annotation
    • http://tufalufodedo.iblogger.org/81156584579.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373502/normal_605d65ccccd68.pdfIn PDF document text
    • https://kadiserujutame.weebly.com/uploads/1/3/5/3/135391940/bavukanimozutat.pdfIn PDF document text
    • https://pobikutilun.weebly.com/uploads/1/3/4/8/134871216/3204292.pdfIn PDF document text
    • https://cdn.sqhk.co/vujaderaz/iH5Rdib/ball_balance_games_2015.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470685/normal_600101a6c6cac.pdfIn PDF document text
    • https://cdn.sqhk.co/vopuvafamiw/ijhjGgf/xinixibolakokarejedi.pdfIn PDF document text
    • https://nudametuwino.weebly.com/uploads/1/3/3/9/133997501/133bb8d.pdfIn PDF document text
    • https://gitasojozatoj.weebly.com/uploads/1/3/0/9/130968906/zibezo-suvuze-lijam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464068/normal_600e9c57e064b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466172/normal_5feb32957b132.pdfIn PDF document text
    • https://mamufitixiru.weebly.com/uploads/1/3/4/6/134640278/591cc01bf0.pdfIn PDF document text
    • https://sunanineriputa.weebly.com/uploads/1/3/2/7/132740954/1579502.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/9c817a5a-f0a5-44ab-b91c-0ced0073be4b/mesa_dual_rectifier_solo_head_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ac812f9-0703-4865-831f-e8df8f3e1e94/el_dador_de_los_recuerdos_pelicula_completa_en_espaol_latino.pdfIn PDF document text
    • http://nuwixunosozi.epizy.com/all_aikido_techniques.pdfIn PDF document text
    • http://lapamapifutul.epizy.com/adapted_physical_education_and_sport_winnick.pdfIn PDF document text
    • http://turebaso.epizy.com/fexarosisisogov.pdfIn PDF document text
    • http://wupafar.rf.gd/clinical_cardiology_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d985767-f40b-4874-a6db-f580b203c309/a_peoples_history_of_the_american_revolution_summary.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_off0000dd3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3A 5524 bytes
SHA-256: a397a99f3554eea0f2c47a201ad32f7cc6f830a8c8d8854e61e471372de3c2ba
font_01_sfnt_off0000effc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFC 10468 bytes
SHA-256: b122c7edb554b26b731f0677474bfd395980a14a8fb0d78aecae707819278d8c

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