Malicious PDF — malware analysis report

Static analysis result for SHA-256 03df3730caa64d29…

MALICIOUS

PDF

75.5 KB Created: 2021-04-03 08:16:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 9f411cd6f27068d9eec3d93ab3fdba0c SHA-1: 15851424ecd4061b1106dacce54f0c375db4f7fb SHA-256: 03df3730caa64d298fc79f7fd51f5e2370252e3f5a981ec0e78202fcb2eedecf
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://lozipotod.ru/123?utm_term=game+anaglyph+for+android PDF link annotation
    • http://sotatetivula.iblogger.org/86022937496.pdfIn PDF document text
    • http://tezibif.mygamesonline.org/the_autobiography_of_benjamin_franklin_dover_thrift_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/fofateze/ewIM0pA/research_assistant_jobs_chicago.pdfIn PDF document text
    • https://cdn.sqhk.co/woleparos/ymje5he/luxumizukatal.pdfIn PDF document text
    • https://cdn.sqhk.co/kadeposamo/jegfhc3/26444936504.pdfIn PDF document text
    • http://nevezewikuzi.iblogger.org/investment_property_calculator_excel_spreadsheet_nz.pdfIn PDF document text
    • https://cdn.sqhk.co/pewesopefim/bjfhao0/how_to_iron_on_patches_with_iron.pdfIn PDF document text
    • https://cdn.sqhk.co/lozuzupadis/xAqtbii/15842476670.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wutejaxevewef.myartsonline.com/47518665666.pdfIn PDF document text
    • http://bifiwapaz.onlinewebshop.net/zepeg.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/61924413541.pdfIn PDF document text
    • http://xofatodifukox.rf.gd/72023006442.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/pidagitewo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80b87815-4369-4ad3-ab7f-efe14c2ab442/flexible_dieting_lifestyle_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/what_is_considered_an_outbreak_covid.pdfIn PDF document text
    • http://wikeziduloduw.rf.gd/9951156662.pdfIn PDF document text
    • http://xovipofeguz.epizy.com/expressions_equations_and_inequalities_unit_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fe2f1df-a355-4f0f-b5de-6dbe790a2fde/telanujewiragizido.pdfIn PDF document text
    • http://lefusalixa.epizy.com/a_court_of_thorns_and_roses_coloring_book_buy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8276169-97f6-4de5-b5f0-ed787b856d14/how_to_clean_a_smoke_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ce71f83-1ba9-4259-b298-2e1d67cb3e63/sonoma_county_businesses.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA70 5412 bytes
SHA-256: 48d0d8b5e0d42389a0e0b4d1b4f1e1e0bcadb8d6f3954859a6a6934d2fb939be
font_01_sfnt_off0000fcb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB9 10660 bytes
SHA-256: 47a3232e1df520e0caa8fbd2826f75cb56feb4c7ebdd872fd5fd0ac3b74d3067

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