Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dfa95715d9e51ec…

MALICIOUS

PDF

132.6 KB Created: 2021-04-16 21:28:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d2ebe2fe2e5bef11223a11a17b22f21f SHA-1: 78ed1212245b9d4908a7f31c6bb15f2408dd67f2 SHA-256: 4dfa95715d9e51ec97bb8f7785474e9f72277606c5347479e8cfc6a7dc4be013
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'Sistemas de manufactura flexible'. No scripts were extracted, but the presence of external URIs and the malware detection strongly indicate a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=sistemas+de+manufactura+flexible PDF link annotation
    • http://macsk.space/dimatadaduzedujiiag9q.pdfIn PDF document text
    • http://nulivanofika.mygamesonline.org/pazenabonixijisepujogib.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/ic_88_marketing_and_public_relations_book.pdfIn PDF document text
    • http://topsol.xyz/best_50_free_movie_sitesfob65.pdfIn PDF document text
    • http://lnstagram-help-businesss.com/crimson_pandaren_phoenix_guide70tgv.pdfIn PDF document text
    • http://pressit.fun/80381578408be30k.pdfIn PDF document text
    • http://piriveva.scienceontheweb.net/98508088736.pdfIn PDF document text
    • http://penafur.scienceontheweb.net/busch_vacuum_pump.pdfIn PDF document text
    • http://uber-global.com/best_bible_study_guide_online8ql97.pdfIn PDF document text
    • http://dobuwiwitevotir.sportsontheweb.net/candida_albicans_morphology.pdfIn PDF document text
    • http://hr-insider.com/spider_man_hostile_takeover_game3mt5i.pdfIn PDF document text
    • http://rawenspant.online/tintin_in_the_congotvt2m.pdfIn PDF document text
    • http://suporefebakibur.mygamesonline.org/dinike.pdfIn PDF document text
    • http://citimart.online/gartner_orlando_symposium_agenda2u6ah.pdfIn PDF document text
    • http://freehookup.xyz/behringer_model_d_manualfw1nr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vewawisu.onlinewebshop.net/54496454336.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/piramodakuru.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/62993781783.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/grammar_checker_for_windows_10.pdfIn PDF document text
    • https://18e99e0c-7034-4a8c-9069-267580a295b8.filesusr.com/ugd/b337f5_105dacd3c58d4bcfb16c1dcbfcc3a277.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/waxapoz/wegaborexuxap.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/logbook_template_2019.pdfIn PDF document text
    • http://solarujarinobo.myartsonline.com/1352943381.pdfIn PDF document text
    • https://76a725e8-946c-4ae9-9249-cda469d35108.filesusr.com/ugd/83c8cc_939f21104cba4dafaa3230fb702f8467.pdf?index=trueIn PDF document text
    • http://polilofu.onlinewebshop.net/on_the_road_jack_kerouac_book_review.pdfIn PDF document text
    • http://kadoxosin.atwebpages.com/zotidabivorib.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_off0001c59f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C59F 5480 bytes
SHA-256: 34d7c7ab39f14330c92c8e318d9e1ff7794c0aa0ca2cd988c232feaa9edf462d
font_01_sfnt_off0001d82a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D82A 13384 bytes
SHA-256: 98de80b360689ad9263b71e2146c2527aff32f59a0d63f2c988c756e20955e99

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