Malicious PDF — malware analysis report

Static analysis result for SHA-256 e78edbb8295716ad…

MALICIOUS

PDF

74.5 KB Created: 2021-03-18 07:51:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9ec97f32ffd50131a9612c86c1aea78e SHA-1: 97738e92adc408f176bbac3a9c918e42943184c4 SHA-256: e78edbb8295716ad7b3aa97f4475f9b79e9859b08ad7fc52b648547707098777
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 0.9998

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://zajinet.ru/strik?utm_term=where+to+buy+omron+10+series+blood+pressure+monitor PDF link annotation
    • https://gefivepuli.weebly.com/uploads/1/3/4/6/134620723/fd4655deab992.pdfIn PDF document text
    • https://weraxugunelega.weebly.com/uploads/1/3/4/7/134719696/xenenovune.pdfIn PDF document text
    • http://siviguxozozux.iblogger.org/libro_automatismos_electricos_e_industriales.pdfIn PDF document text
    • http://nugekurobeju.iblogger.org/88782869326.pdfIn PDF document text
    • https://nozudepoget.weebly.com/uploads/1/3/1/1/131163917/b9fb70fdfa4.pdfIn PDF document text
    • http://cosmosqrab.online/13104825758z8sq3.pdfIn PDF document text
    • https://zejotagidegixop.weebly.com/uploads/1/3/4/5/134522105/dorixewexavube.pdfIn PDF document text
    • https://meliwuka.weebly.com/uploads/1/3/2/7/132740471/e95272446a.pdfIn PDF document text
    • http://businesshelpservice.com/game_maker_studio_1.4_downloadw9ewc.pdfIn PDF document text
    • http://nevezewikuzi.iblogger.org/sleeping_beauty_2014_parents_guide.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/8da89133-9059-454f-b62e-a31248a6e4ad/regarder_le_film_le_petit_nicolas_en_streaming_gratuit.pdfIn PDF document text
    • https://61df3396-90b5-4b69-a3ae-475c9da6ebc5.filesusr.com/ugd/516574_bf01a1e3e3094e49ba9ec5783e20aaba.pdf?index=trueIn PDF document text
    • http://vofekopo.rf.gd/juwureduwikazibal.pdfIn PDF document text
    • https://c370dac7-4848-4fa0-a6df-94361299e8ba.filesusr.com/ugd/fa6303_159224b926044656a1fd0d81aec67970.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/roxawo/compressport_calf_size_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc15df23-eeed-4dae-ba13-0b56d4353c1a/dunkin_donuts_menu_prices_munchkins.pdfIn PDF document text
    • http://beguresenoraw.epizy.com/computer_systems_engineering_salary_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3489f08-67f8-4d22-a942-d44aeb63e20b/tipos_de_comunicacin.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/manual_de_guitarra_clasica_para_principiantes.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_off0000e587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE587 5436 bytes
SHA-256: 8e87bef72a4b8069f60d447eef318726337d6d7ecc35c0f4a19725bde9c79e18
font_01_sfnt_off0000f7ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EE 10808 bytes
SHA-256: 68ad38d82ca4caf23cc5c1e40334a83f41b60173fa7d33ccca72ffb071441367

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