Malicious PDF — malware analysis report

Static analysis result for SHA-256 725db26f1a9bff75…

MALICIOUS

PDF

72.4 KB Created: 2021-02-28 10:04:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3c009d6bc2667d025837bcc955d45b01 SHA-1: be93b02ce88486a3b901e993379b9a274e31a8e9 SHA-256: 725db26f1a9bff75b13578ec22729001fa6155a7ca08624217f920ee0ba78962
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://xajibur.ru/award?keyword=how+to+make+wide+awake+baby+sleep PDF link annotation
    • https://riwusivi.weebly.com/uploads/1/3/4/9/134900433/dc7ec5acd05f.pdfIn PDF document text
    • http://evgeniy-semenenko.ru/what_do_computational_physicists_do2stqm.pdfIn PDF document text
    • https://tisegibak.weebly.com/uploads/1/3/1/3/131380339/5c2174.pdfIn PDF document text
    • https://zubisixoligifi.weebly.com/uploads/1/3/4/4/134479514/7186245.pdfIn PDF document text
    • https://sepafolelobonel.weebly.com/uploads/1/3/4/6/134614676/polovunowumexibari.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/25543874128.pdfIn PDF document text
    • http://leqqurint.online/87842335121tdn13.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bexovivuvere.myartsonline.com/mophie_powerstation_xxl_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/116212961.pdfIn PDF document text
    • http://runoxujozu.rf.gd/zabufajeforojivatiro.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/hansteen_holdings_annual_report_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/boucher_prosthodontics.pdfIn PDF document text
    • http://widifusi.myartsonline.com/what_is_american_society.pdfIn PDF document text
    • http://nomekerileme.epizy.com/tozomedu.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/what_channel_is_fox_on_directv_now.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/saad_lamjarred_song_ghaltana.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/tananamubemiwep.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_off0000de3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3C 5368 bytes
SHA-256: 4c75b2c8972eee57d5e43dbad748dd28810162b819ee868cd54e874b59843f2f
font_01_sfnt_off0000f079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF079 10476 bytes
SHA-256: 92ed983e489caad87e9bb4f3beeee9cf92510d3a0a6e73689be22f3ef52fa78e

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