Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6d32c3901419b9c…

MALICIOUS

PDF

76.4 KB Created: 2021-03-20 08:03:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: eb59341df99f02163bebf07f6778c8b4 SHA-1: 203647046ceee3c1d0241cba3af73d695d9cc66d SHA-256: b6d32c3901419b9ce5420c8eca28cce417cdcb00d295d69f28890e8790fa082d
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 0.9995

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/award?keyword=zoloto+butterfly+valves+price+list+2020+pdf PDF link annotation
    • https://xalitizamer.weebly.com/uploads/1/3/4/8/134863297/juxunewifinivuduba.pdfIn PDF document text
    • http://nogezat.iblogger.org/kannada_movies_2019_full_movie_hd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412996/normal_5fd8a0b5ce80a.pdfIn PDF document text
    • http://finonit.mypressonline.com/kakuzebiporizomogoralikil.pdfIn PDF document text
    • http://tonevagewalilu.medianewsonline.com/tankless_hot_water_heater_rinnai_reviews.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455907/normal_601fff595ec33.pdfIn PDF document text
    • https://kunatelifarak.weebly.com/uploads/1/3/2/7/132712072/a567c6e4db6dc61.pdfIn PDF document text
    • http://poposiruta.mywebcommunity.org/bronkopneumonia_menurut_who.pdfIn PDF document text
    • http://wordsideget.top/mastering_javascript_object-oriented_programming_download1bi63.pdfIn PDF document text
    • http://xxlmature.site/jukimobaniwolebepanitas6k9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377935/normal_601aa8014eaf1.pdfIn PDF document text
    • http://zeropium.com/can_you_be_a_navy_seal_as_a_womanip9o1.pdfIn PDF document text
    • http://tegonur.22web.org/natibuzajefuroni.pdfIn PDF document text
    • http://gratoramaa.space/basher_sabertooth_manualvv9pk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371240/normal_5fea00b097bba.pdfIn PDF document text
    • http://tvoy-ogorod.online/mufovo1z7jg.pdfIn PDF document text
    • http://limevekobo.iblogger.org/hd_film_site_name.pdfIn PDF document text
    • https://kejedavozeve.weebly.com/uploads/1/3/1/4/131483662/7989908.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/latufenaw/what_are_the_qualities_of_a_good_motivational_speaker.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/alberta_ski_resorts_snow_report.pdfIn PDF document text
    • http://vedumojaje.epizy.com/bosch_nexxt_100_series_washer_wont_spin.pdfIn PDF document text
    • http://karifopiti.epizy.com/cession_vehicule.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_off0000ea58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA58 5680 bytes
SHA-256: 14391d519088cccddececfb372c2518dc06ab50fb990891135baba1322544b4b
font_01_sfnt_off0000fdcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDCB 11156 bytes
SHA-256: 9f5e612e8147a17467206ead67622118e420687c28e84b6a17611a58b7a50773

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