Malicious PDF — malware analysis report

Static analysis result for SHA-256 d64b41c0fecd2986…

MALICIOUS

PDF

75.4 KB Created: 2021-03-04 01:26:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6e1fe4211c8c6be639a803379f22345c SHA-1: 468ef691439f0939d1cd19ac2df416b87d675f24 SHA-256: d64b41c0fecd298698095ed1deda4a36576697a8fc21f21e63a50595b8efa2d4
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://midufefew.ru/wix?keyword=camp+three+falls+winter+camp PDF link annotation
    • https://fewanisip.weebly.com/uploads/1/3/2/7/132712603/varodabozupezax_luzuzibe_mizezodibug.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/43284199187.pdfIn PDF document text
    • http://tesupelaj.sportsontheweb.net/lufosegifaweforona.pdfIn PDF document text
    • https://cdn.sqhk.co/xapawavuma/fSihEQC/25122062838.pdfIn PDF document text
    • https://rowaxomizubo.weebly.com/uploads/1/3/2/3/132302787/sufepetit-beladakuzafepim.pdfIn PDF document text
    • https://legopaxazomunan.weebly.com/uploads/1/3/5/3/135396831/vivomin_fegujob.pdfIn PDF document text
    • https://cdn.sqhk.co/sasibasodiwu/ahbiSib/hockey_games_today_directv.pdfIn PDF document text
    • https://venunuwaxel.weebly.com/uploads/1/3/2/7/132740799/1723805.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/fajonubinomeder/15321189549.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/97539160413.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/what_is_a_review_paper_in_science.pdfIn PDF document text
    • http://jirabasojexosud.atwebpages.com/72375026327.pdfIn PDF document text
    • http://ledufowi.myartsonline.com/96766389291.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/road_incident_report_nsw.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/78817017007.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_off0000ec18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC18 5252 bytes
SHA-256: 5f12678a76638e9e086473d9a10d966e3ea71bf7d4c4b05ff28d2c0e92e1ce5c
font_01_sfnt_off0000fddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDB 10184 bytes
SHA-256: 608bb8ca8eeab07bf53cb1c50135ba43fb55028e28f137c89f4520aec3b13337