Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c7e6ce65d6ff67e…

MALICIOUS

PDF

74.7 KB Created: 2021-03-22 18:13:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 7f6d806fe2e565356edb6d1d09101190 SHA-1: 8558d0dd61fc4bf23394b7e081b94bb75d19a02f SHA-256: 7c7e6ce65d6ff67e7bccbb85362ad64d0d068ee6de2926f020241259b84471dc
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs, with one notable URL pointing to a link farm on disposable hosting, suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, contains metadata related to its creation, which does not detract from the malicious indicators.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://gimoguvi.ru/123?utm_term=dance+monkey+piano+music+sheet PDF link annotation
    • https://cdn.sqhk.co/kapidibewomu/Djagx0B/15387908980.pdfIn PDF document text
    • https://cdn.sqhk.co/voxedijudibo/icqifHX/nulonowebopevo.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/44258924584.pdfIn PDF document text
    • https://cdn.sqhk.co/fodibaniwe/dpgE5jd/71341437065.pdfIn PDF document text
    • http://gasolotiravizid.sportsontheweb.net/riruw.pdfIn PDF document text
    • https://cdn.sqhk.co/lupejatuwi/Cw3aTji/imf_meaning_slang.pdfIn PDF document text
    • https://cdn.sqhk.co/kufejeni/T920fJv/60038456966.pdfIn PDF document text
    • https://cdn.sqhk.co/kefivaxepaj/bidwTje/newsnow_boston_celtics.pdfIn PDF document text
    • http://tapozifokun.mywebcommunity.org/81729205968.pdfIn PDF document text
    • http://bafiselavanebep.mywebcommunity.org/30121936524.pdfIn PDF document text
    • http://luwogexejel.getenjoyment.net/square_d_well_pressure_switch_wiring_diagram.pdfIn PDF document text
    • https://cdn.sqhk.co/fasisela/hbZgiif/the_sun_3d_gallery_of_football_stars.pdfIn PDF document text
    • https://cdn.sqhk.co/porekige/0WgficK/good_morning_happy_fall_friday.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/WGBichl/ball_balance_game_free_download_for_pc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/38ae4631-3b25-4ee2-b6e5-7fe30053e098/what_are_engineering_drawings.pdfIn PDF document text
    • http://nonosolagosev.epizy.com/nujasiresofizive.pdfIn PDF document text
    • http://nolozor.rf.gd/zabarakinaneperud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58670a56-cdbc-4165-8a63-aa8ecc33ed81/46622916781.pdfIn PDF document text
    • http://todakule.rf.gd/27821743298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8676294-117a-41fe-9822-41a280f9760a/oracle_12c_sql_tuning_certification.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/531b0ea7-5ab5-4d3e-aa17-55157eb76b90/15523317218.pdfIn PDF document text
    • http://vurorevebosexu.rf.gd/wazuvarijesuwowaziju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8545ec5-9ab5-445d-bae2-7f2d86f9daed/83570049267.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_off0000e600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE600 5212 bytes
SHA-256: 142b0576799c5676bd94c876389052195c001950acb7e17f3113c7cb0d8e1e10
font_01_sfnt_off0000f7ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AB 11428 bytes
SHA-256: 38544564da317384f700f0867e395f0541114afac59939a0706e12cada39d29f

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