Malicious PDF — malware analysis report

Static analysis result for SHA-256 43f1c4a545f1660c…

MALICIOUS

PDF

72.1 KB Created: 2021-02-20 19:44:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a0332799a60c43a537b81eb3b398f1c7 SHA-1: eb56014b874490b5f50dddbad4884e92687c1ad4 SHA-256: 43f1c4a545f1660c81fdca12ecec5530c8da06bdf899beb75aacbf4c1197a2ea
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=calories+in+1+grilled+pork+chop PDF link annotation
    • https://cdn.sqhk.co/tamoravuwera/yJgiVaj/planets_in_retrograde_2020_june.pdfIn PDF document text
    • http://goodsun.space/prince_ali_sheet_musicqadoj.pdfIn PDF document text
    • http://wiruribadusa.iblogger.org/confidential_statement_for_fax_cover_sheet.pdfIn PDF document text
    • https://jawufilarom.weebly.com/uploads/1/3/6/0/136054640/togenajez-vufamitud-fepitibateramov.pdfIn PDF document text
    • https://pamuguvijokogag.weebly.com/uploads/1/3/4/8/134883264/bexowu.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/bKbMRhe/adventure_world_travel_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/aoAhhqX/brian_padgett_central_city_iowa.pdfIn PDF document text
    • https://cdn.sqhk.co/vufisolepu/fAhcUgi/boo_boo_keys.pdfIn PDF document text
    • https://cdn.sqhk.co/zanudiwageg/djhGGha/jilutugupuve.pdfIn PDF document text
    • http://reassurez-moi-fr.info/90282988097gzbqr.pdfIn PDF document text
    • http://kiluniv.22web.org/nusejepasukub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/23165322599.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/kinujadipitovufenuk.pdfIn PDF document text
    • http://sikejilewiz.epizy.com/volume_booster_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/word_cookies_fig_level_19_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/jixuwagek.pdfIn PDF document text
    • http://dupetomumipur.rf.gd/what_is_implicature_in_pragmatics.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/namiburigexup.pdfIn PDF document text
    • http://dotenax.rf.gd/xobabi.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/kipap.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0CE 5184 bytes
SHA-256: ff51fa7876c5e03383f3646c237ea17dcc3c0028eadc419919c3c562034fe947
font_01_sfnt_off0000e266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE266 10152 bytes
SHA-256: 44f99813965f2e9ffa03200ced3e966c78f8187ed0f4862b4f2e13fbe0d7d4c0
font_02_sfnt_off00010523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10523 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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