Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f13713b9fcac53f…

MALICIOUS

PDF

63.3 KB Created: 2021-02-23 01:25:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9639339136288878fe64d6c2fe007771 SHA-1: fa4d4d6372e779e798ed4a2edbbb036d11247795 SHA-256: 4f13713b9fcac53f5e070de9e107c5c41284f2cf3f0e99b3bccf6605b222c104
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=viper+python+remote+start+manual PDF link annotation
    • https://jaxenexeleti.weebly.com/uploads/1/3/5/3/135320290/6e81457915a828.pdfIn PDF document text
    • http://xezobofelupazat.22web.org/numigorukenozalotovuleb.pdfIn PDF document text
    • https://sipitajopidegol.weebly.com/uploads/1/3/1/4/131453448/xuvedavubenoxe.pdfIn PDF document text
    • http://13millions.store/sekipabeviripawjdlns.pdfIn PDF document text
    • https://jixatazibasuv.weebly.com/uploads/1/3/4/4/134402985/zuresijewenugu-fotuzepip-najupugil-vogitegixugodis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488323/normal_5fe6eed8e8e4c.pdfIn PDF document text
    • https://punoburewi.weebly.com/uploads/1/3/4/3/134305970/5468411.pdfIn PDF document text
    • https://poxesaxe.weebly.com/uploads/1/3/0/7/130738711/vumexajugogidufuvo.pdfIn PDF document text
    • http://leyloften.online/how_to_send_score_reports_greex5fl.pdfIn PDF document text
    • https://kawuwulaf.weebly.com/uploads/1/3/3/9/133987507/cf86d033.pdfIn PDF document text
    • https://xikisujegowo.weebly.com/uploads/1/3/1/8/131856166/7316347.pdfIn PDF document text
    • https://wisetigu.weebly.com/uploads/1/3/4/3/134357320/6996050.pdfIn PDF document text
    • https://vinazawodix.weebly.com/uploads/1/3/4/3/134352366/tevabofej.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486550/normal_6007acb90d5f5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://joxojivanajixuj.rf.gd/41001597342.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/symbols_emojis_letters_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/sensory_play_ideas.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/remupabotosatob.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/duromax_4500_generator_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/jurnal_tanaman_bayam_merah.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_off0000bf11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF11 5128 bytes
SHA-256: 29401341ba52961435583e3e6095237fed91426187fdd61735b06ff1e08960cd
font_01_sfnt_off0000d05f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD05F 9296 bytes
SHA-256: 80f963e80ec2d3235b944fb15227000515402b0e87d0d2dbf79c84b41b56d3c6

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