Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf019e441501d46…

MALICIOUS

PDF

72.2 KB Created: 2021-02-25 22:41:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 27574202d294ec6102fb2bb34faa117c SHA-1: c79cb54421ef4712386eedc0b3e640fa1de04717 SHA-256: abf019e441501d46209c4f8fc28de06b5615ffc12e143062e1f9e5bb0c1ad3f3
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/strik?utm_term=car+aircon+fan+stopped+working PDF link annotation
    • https://xaforegitada.weebly.com/uploads/1/3/1/4/131413040/7898822.pdfIn PDF document text
    • https://nejotadig.weebly.com/uploads/1/3/1/1/131164569/3085824.pdfIn PDF document text
    • https://bodokevusigow.weebly.com/uploads/1/3/2/7/132740435/3402371.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wuguvorejapak.rf.gd/rca_3-device_universal_remote_rcr003rwd_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/81206155258.pdfIn PDF document text
    • http://sosukaf.epizy.com/pidolumiguvazegaxan.pdfIn PDF document text
    • http://xozelabudizi.epizy.com/82986624326.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/15760340460.pdfIn PDF document text
    • http://jozapatoxijoraw.epizy.com/curriculum_development_in_the_philippines_during_spanish_period.pdfIn PDF document text
    • http://depevatumelo.epizy.com/mobejijifalifenesa.pdfIn PDF document text
    • http://zunebodiz.epizy.com/bolshoi_ballet_performance_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/jugofap.pdfIn PDF document text
    • http://dowuxufab.epizy.com/31173512369.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/mutuxopu.pdfIn PDF document text
    • http://lajirobodogew.epizy.com/benefits_cancellation_letter_template.pdfIn PDF document text
    • http://juvisupejigu.epizy.com/fuvavewuforofufijugon.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/fraction_word_problems_4th_grade_with_answers.pdfIn PDF document text
    • http://mozabufapimil.epizy.com/75184948568.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_off0000dcf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF1 5352 bytes
SHA-256: ed0622b1ffef442c849563834cb27657ec7db5ae6dcb906e73f91e24db140609
font_01_sfnt_off0000ef53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF53 10576 bytes
SHA-256: b288286eeb7025129d182590285f2ca89bc24d156172b18a2cf1da95728dd0f0

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