Malicious PDF — malware analysis report

Static analysis result for SHA-256 37eab66245037487…

MALICIOUS

PDF

102.8 KB Created: 2021-03-24 18:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 360dcad015eb3faa13100c3b1e18077d SHA-1: 96dccf94754973062d8d02c55a514c6caf5a7451 SHA-256: 37eab662450374874e5c31e5b418aba5a328857bb16f679e8cfde3c40908420d
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://fokemale.ru/strik?utm_term=write+a+science+fiction+story+in+200+words PDF link annotation
    • http://valaporinepisu.22web.org/wall_footing_design_spreadsheet.pdfIn PDF document text
    • https://soxokelu.weebly.com/uploads/1/3/4/4/134494323/bbfba9400138040.pdfIn PDF document text
    • http://jokidinavefo.22web.org/allen_heath_gl2400_service_manual.pdfIn PDF document text
    • https://nukubutoti.weebly.com/uploads/1/3/2/3/132302768/rowusareda.pdfIn PDF document text
    • http://reabook.online/95136525527r9l98.pdfIn PDF document text
    • http://zvezdasevera.online/specialized_sport_computer_instructionsdqbww.pdfIn PDF document text
    • https://sirawosoze.weebly.com/uploads/1/3/0/7/130776152/c4787425dd56d6.pdfIn PDF document text
    • http://raxuzogigegekaj.66ghz.com/actionable_information_examples.pdfIn PDF document text
    • https://dirututusobed.weebly.com/uploads/1/3/5/3/135347210/dunavo_bofiruditijuf_xologedelut_jupizixokava.pdfIn PDF document text
    • https://gegoviboz.weebly.com/uploads/1/3/4/8/134876631/xufasorusujewaf.pdfIn PDF document text
    • http://gogosesetuver.22web.org/libro_la_amortajada_gratis.pdfIn PDF document text
    • https://sakolepak.weebly.com/uploads/1/3/4/5/134588428/5374439.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puxitisajit.epizy.com/80919147267.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e21d92d6-4a57-477f-9963-be03a5b8f269/dioses_y_hroes_de_la_mitologa_griega_shua.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a46fbaa7-210d-4ef4-9a65-066daf392970/94430932350.pdfIn PDF document text
    • http://sewasijibakel.epizy.com/antonyms_and_synonyms_list_with_bangla_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d829c95-6ded-4e43-8015-362d324a44f7/linksys_ea6400_wireless_repeater.pdfIn PDF document text
    • http://jaxegowanav.rf.gd/background_ppt_menarik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ea090b7-5d5b-4afe-9a7d-6bcfbe6ac4b3/vejatesagifizajijutemave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/487ba0e5-0bad-43ea-812f-e353627d2314/murray_select_22_lawn_mower_oil.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_off00015175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15175 5464 bytes
SHA-256: 78b955eb13d1e55ebc0dd6fa21e2fcf2398fd3e67752c45faf3c0eea4e309944
font_01_sfnt_off0001643d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1643D 12336 bytes
SHA-256: 336805c36c86270ae2087bf76b4532a36d2a7c12f7ac25776e8a5da1f785b030

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