Malicious PDF — malware analysis report

Static analysis result for SHA-256 886d00a03a08794a…

MALICIOUS

PDF

72.5 KB Created: 2021-02-24 08:59:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 856ba759823d1b11120172eda8240a17 SHA-1: 044d3132ddf00135f0069a2d2a7bd8455f3df6e8 SHA-256: 886d00a03a08794ad1f7a02dae4567ea39034125cca5d4cb7b34273de3df095f
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://baarspo.ru/wix?keyword=copper+chloride+and+aluminum+lab+conclusion PDF link annotation
    • https://sukuwakutas.weebly.com/uploads/1/3/4/6/134603616/9973993.pdfIn PDF document text
    • http://front-glass.space/what_does_tripletail_fish_taste_like0k5gv.pdfIn PDF document text
    • http://tgesheff.xyz/tabela_de_preos_carros_usados_portugalcmqss.pdfIn PDF document text
    • http://top-odejda.com/canon_printer_mp160_troubleshootingglzbx.pdfIn PDF document text
    • http://smeshnoykir.space/73780568555y40z7.pdfIn PDF document text
    • https://kagozekexep.weebly.com/uploads/1/3/5/9/135956698/7107996.pdfIn PDF document text
    • http://bezprovodov.guru/28544303733pinbk.pdfIn PDF document text
    • http://mandarins.space/rae_sremmurd_mp3_download_freewpewn.pdfIn PDF document text
    • http://smartbright.club/bosch_security_alarm_manual5q9yo.pdfIn PDF document text
    • http://opt05.ru/tejogobatiz167wo.pdfIn PDF document text
    • http://gtomishebs.xyz/aircraft_performance_group_atlas0hblj.pdfIn PDF document text
    • https://kikizesojumare.weebly.com/uploads/1/3/4/7/134718780/jixasomi.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/nefomojuwet/discovery_science_tv_guide_norge.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/sosibetogopojalogugux.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/pelori.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/82552318298.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/kudirixobenevojifel.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/risk_management_interview_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/92850396243.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/rate_base_percentage_worksheets_for_grade_6.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_off0000ddc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC1 5356 bytes
SHA-256: ff7500a4292b2ff05cde8d5e0a856f469c1edcaaebfdffe8eeba773efaeea361
font_01_sfnt_off0000efba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBA 10948 bytes
SHA-256: 52ea876045402fb59af2a60a611fc5aa1d173e53abee2a0e09760e9fdafca19d

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