Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc8e285361b9809c…

MALICIOUS

PDF

85.5 KB Created: 2021-04-04 21:27:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6c72c402de717602be887539b6d75c0f SHA-1: de35123374254d16a3a35e48d80cca1c071c9dce SHA-256: fc8e285361b9809c56544f07b7941c148c8035b7f1a18ad360227a5f621b863d
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 0.9991

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://jottigo.ru/strik?utm_term=don+juan+demarco+film+johnny+depp PDF link annotation
    • http://virnet77.ru/30148020323a1o0v.pdfIn PDF document text
    • http://getplafond.xyz/acer_monitor_displayport_no_signalpgbyt.pdfIn PDF document text
    • http://erogan-encolumbia.site/digowizojezejotadaipe6g.pdfIn PDF document text
    • http://kaforij.22web.org/pdf_adobe_reader_9_free_download.pdfIn PDF document text
    • http://kuvijuwe.22web.org/baby_names_and_meanings_free_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zavivemigowoson.epizy.com/49918822551.pdfIn PDF document text
    • http://suludigana.epizy.com/thanksgiving_coloring_sheets_free_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40cfc872-f4e6-4e75-a5a2-3afba0fce745/dell_latitude_e5400_bluetooth_driver_for_windows_7_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/how_big_is_a_32_drill_bits.pdfIn PDF document text
    • http://labubesasowil.epizy.com/genetic_counselling_steps.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/37453063031.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9116cd9c-d477-49eb-8449-6fd72a2d1e9c/lokedijunad.pdfIn PDF document text
    • http://rusireges.epizy.com/3077814697.pdfIn PDF document text
    • http://tiwubove.epizy.com/71379744498.pdfIn PDF document text
    • http://pexoroxijaseduj.rf.gd/windows_10_update_assistant_tool_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9862f6bc-e38c-45a5-9f39-b1f94a38215c/11362264343.pdfIn PDF document text
    • http://xowuxojugo.rf.gd/52410040864.pdfIn PDF document text
    • http://jojovezelel.rf.gd/jirowanatezapazoromupesi.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/best_christopher_hitchens_quotes_religion.pdfIn PDF document text
    • http://dizutobasuxolom.epizy.com/zirov.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/everstart_smart_charger_codes_90.pdfIn PDF document text
    • http://pekagotikoweguf.epizy.com/how_to_program_a_ge_universal_remote_to_a_emerson_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/how_to_troubleshoot_a_reznor_heater.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93ce86f0-c523-4655-85de-00327c7be61b/xoripubajerafik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41a576df-d0a1-4ab0-9e15-1bc6448a4e17/robinson_crusoe_novel_by_daniel_defoe_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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E98 5392 bytes
SHA-256: 1917466f5b2de6605eb3e3e142bc2756b8cc2de076e8084b12af47960b44ed13
font_01_sfnt_off000120df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120DF 11628 bytes
SHA-256: 89290b8ca85d639d21be3e160436f33ee0f1e8a2d992ad3279bb6697a8dfedfa

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