Malicious PDF — malware analysis report

Static analysis result for SHA-256 87f345d8ec6a462c…

MALICIOUS

PDF

78.8 KB Created: 2021-05-07 23:28:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ea4629e1c76f509d564c0bf821ab1d87 SHA-1: d9a183f2be06bacc83d70204d6fd484371d022ca SHA-256: 87f345d8ec6a462c216b3bf4a4fbb8f55324df4498e428011f935a8940c96a3a
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://botokaw.ru/strik?utm_term=cuales+son+los+conectores+discursivos PDF link annotation
    • http://info-pages.ru/vivavifupesi2bdkn.pdfIn PDF document text
    • http://ebay-coupon.ru/arena_football_league_2020dm0cq.pdfIn PDF document text
    • http://gezinuduwep.medianewsonline.com/wenofederisoretemepi.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/statistical_mechanics_questions_and_answers.pdfIn PDF document text
    • http://gromstroy.com/169886538345xpju.pdfIn PDF document text
    • http://twobigs.space/69242931899awz5h.pdfIn PDF document text
    • http://1xbet-registr.site/42853004157slupa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408853/normal_6005554169bc5.pdfIn PDF document text
    • http://forkidsshop.online/92662448471x6yqc.pdfIn PDF document text
    • http://opticsystem.website/stihl_bg55_air_filter_part_number3sg1n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454047/normal_6037d6f63230e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407804/normal_605dcb64efb21.pdfIn PDF document text
    • http://ruvogodozipabiv.scienceontheweb.net/what_is_digital_logic_design.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383565/normal_605a554ea5dbb.pdfIn PDF document text
    • http://solent.bar/amar_chitra_katha_malayalam80vs7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368984/normal_604d9779e2ead.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zorikeroz.onlinewebshop.net/modolowavugimav.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/45959904320.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/76566414018.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/sotutovawet.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/josuferevifab.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/38366205342.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/chander_pahar_bengali_movie_song.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/community_acquired_pneumonia_guidelines_2016_idsa.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_off0000f5bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BF 4900 bytes
SHA-256: adb1605dda700daddba9e2ab2a6455d14ad4d468c5647dc1a0152237c0f3cfae
font_01_sfnt_off00010672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10672 12020 bytes
SHA-256: af5202c7d4850c9843ca29549946074fa05d67a70d0678f6103cdd1f71175895

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