Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bd416740bf1798d…

MALICIOUS

PDF

72.2 KB Created: 2021-02-21 20:50:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 269fb45a376cde286c325e8eaffdf6c0 SHA-1: 8875209db6efd14fc8ffbbccfcacbc5831f48bd7 SHA-256: 5bd416740bf1798d0182f7b51b134601016e30451bd7a2c72a89e1067ab8b497
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=inorganic+nomenclature+worksheet+answers PDF link annotation
    • http://manthoughtswebsite.website/10611681435t8juj.pdfIn PDF document text
    • http://new-leggins.site/ringtones_samsung_galaxy_s8_downloadorgzh.pdfIn PDF document text
    • http://telemprom.xyz/binuzarotavatelulupadesasl0e2t.pdfIn PDF document text
    • http://lami-lashes.site/jomegolededotrtza9.pdfIn PDF document text
    • http://voiprormul.xyz/global_islamic_finance_report_2017sy82m.pdfIn PDF document text
    • https://dibarovufi.weebly.com/uploads/1/3/0/7/130776786/3726003.pdfIn PDF document text
    • https://nunosutelakib.weebly.com/uploads/1/3/1/3/131383720/purojelujumuwe.pdfIn PDF document text
    • http://kindraretterath.com/scratch_3._0_lessons8avjt.pdfIn PDF document text
    • http://sesalon.xyz/bodumepuzedemisopiso1qjvj.pdfIn PDF document text
    • https://zuzedunili.weebly.com/uploads/1/3/4/4/134460484/xubapote.pdfIn PDF document text
    • http://lidlid.xyz/matlab_matrix_tutorialr8g3v.pdfIn PDF document text
    • https://lekaretuzej.weebly.com/uploads/1/3/0/7/130738752/484b5b6bc7.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/batoragubukepo/70066986292.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/bedways_tamil_dubbed_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/mega_bomberman_game_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/56307543555.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_off0000d08a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD08A 5308 bytes
SHA-256: d3c34bbcd48a1f728ba3f22683e7f4b5c406c16ec39646c7fad24288019c1f52
font_01_sfnt_off0000e280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE280 15164 bytes
SHA-256: 8f7cabb6be0f821a4f87b12701eec05934fad453bdf9025e6bd24a86c1350b55