Malicious PDF — malware analysis report

Static analysis result for SHA-256 7348c918d04a98e6…

MALICIOUS

PDF

74.6 KB Created: 2021-03-04 09:47:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2c42e49d14029c50ed3899a5f61662ff SHA-1: 30e9a824ea13ce6ef22bbc415009727c0e1ffa70 SHA-256: 7348c918d04a98e6b4f58d2ff8268f8c3218e87c5465040a06ca60bfaf65964e
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 0.9996

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/strik?utm_term=1996+kawasaki+vulcan+1500+owners+manual PDF link annotation
    • http://bitcoinov.site/cuisinart_model_cpc-600_manualkvbgk.pdfIn PDF document text
    • https://cdn.sqhk.co/fiduzosi/diipHQ9/rope_swing_chairs_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/veladaxuzeba/9Qcgghi/should_i_fight_king_vendrick.pdfIn PDF document text
    • http://triple-doska5.club/computer_hardware_abbreviations_listfqsu5.pdfIn PDF document text
    • http://fegivate.medianewsonline.com/how_to_connect_my_ipega_controller_to_my_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412174/normal_602467372dc4f.pdfIn PDF document text
    • http://1gusevshop.space/jigisq7znp.pdfIn PDF document text
    • http://riwotivadejud.sportsontheweb.net/explain_the_purpose_of_writing_a_report.pdfIn PDF document text
    • http://gifinibufenatar.medianewsonline.com/timuxorafumam.pdfIn PDF document text
    • https://cdn.sqhk.co/sixatowitur/BorbUij/zegolukefuwobugetaro.pdfIn PDF document text
    • http://nafarami.medianewsonline.com/wahl_clipper_9818l_charger.pdfIn PDF document text
    • http://mavitrade.com/62607549443yb698.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403681/normal_5fc93d1a9fc52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383582/normal_601ab05ed0e96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403959/normal_6015311268f19.pdfIn PDF document text
    • https://cdn.sqhk.co/tixukiko/ajeDEhe/kaxej.pdfIn PDF document text
    • http://bagesopabiwub.scienceontheweb.net/what_is_the_oil_gas_mix_for_echo_blower.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/baidu_netdisk_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/bleeding_cowboys_pro_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zowibatev/binomische_formel_geometrisch_erklrt.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/wenexixegamejanusosemal.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_off0000e45a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE45A 5692 bytes
SHA-256: 57c66c652c5634fe0277b54931ece5556771effd829bb580437ef87d6dbe3c0c
font_01_sfnt_off0000f7c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C7 10516 bytes
SHA-256: 30efacdd04416ab51d1e324cf4d09d699086d4e41e921b8d74e4b332ea011378

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