Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce24abbedfeb1d0c…

MALICIOUS

PDF

77.9 KB Created: 2021-04-21 16:26:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: fd6c0080506b1574bbd1eb6ad02b7c6e SHA-1: c7bc567416147b22d0a32957545a30b5a63fd18d SHA-256: ce24abbedfeb1d0cfe96f2448e07112b4cc053c83c6ab316339645615cf66461
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 0.9999

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://ponafet.ru/strik?utm_term=los+100+verbos+irregulares+mas+usados+en+ingles+pdf PDF link annotation
    • http://kindraretterath.com/how_old_is_peggy_mckamey1kysk.pdfIn PDF document text
    • http://bobejitamatu.iblogger.org/knee_exercises_oxford.pdfIn PDF document text
    • http://instapresent.site/ponuzikibozesatojncor8.pdfIn PDF document text
    • https://waxevinibiwe.weebly.com/uploads/1/3/0/9/130969944/8209253.pdfIn PDF document text
    • https://mavuzoxawajike.weebly.com/uploads/1/3/0/9/130969593/nagegotafirijuwezudu.pdfIn PDF document text
    • https://winudepawo.weebly.com/uploads/1/3/4/1/134132470/kuxebijolimivi_pigezikosifi.pdfIn PDF document text
    • http://imkl-checker.com/xofugagavideax3d7.pdfIn PDF document text
    • http://strapslap.online/firekulujepagebim2f0z6.pdfIn PDF document text
    • http://nofosofeze.iblogger.org/chess_offline_free_2018.pdfIn PDF document text
    • http://zifosazoniduve.22web.org/23212429152.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vidifazitonigi.epizy.com/15637984249.pdfIn PDF document text
    • http://xumutopefar.rf.gd/majesty_chords_delirious.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e376bf3-ce3b-4114-a8a7-449dc8099328/parrot_party_bluetooth_speakers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1224dbe-031c-488d-b5dd-a6b98ff8196c/49798249364.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/608a2b48-4277-4f30-8060-289e0ec1eee2/difiber.pdfIn PDF document text
    • http://vogojitipam.epizy.com/59926178872.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32af5203-99e1-4fcb-a5a8-a42e36776f37/29810835749.pdfIn PDF document text
    • http://beritoka.rf.gd/ieee_829_incident_report.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_off0000e8bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BB 5696 bytes
SHA-256: f87095376ac0724d70b0eed4c7ce8e2131a6ffa35f06cd2438b13b9d093b6b1e
font_01_sfnt_off0000fc1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1B 13692 bytes
SHA-256: f30e5138fddc1b6eafe7b33edd6be24954433ac31e97955545f89ad4525c5689

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