Malicious PDF — malware analysis report

Static analysis result for SHA-256 06af1d1eeb4f6eb8…

MALICIOUS

PDF

73.5 KB Created: 2021-02-09 07:10:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c4591c0e94f56a09d321792ab04f7543 SHA-1: 2359dae49845b9a6ccf25b5436f85d56f4d668e6 SHA-256: 06af1d1eeb4f6eb8636d58797945fd44aa9a344cdd9d4058878ba775f652bb23
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://maypoin.ru/wb?keyword=eu4%20prussia%20guide%201.%2026 PDF link annotation
    • http://buyervannakupitvsem.xyz/bubble_maniac_tea_house_peterboroughvx89c.pdfIn PDF document text
    • https://nivujetomut.weebly.com/uploads/1/3/4/7/134753784/5693387.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/idrgfjg/nintendo_shoot_the_duck_game.pdfIn PDF document text
    • https://merejeweja.weebly.com/uploads/1/3/1/3/131381112/ziberib.pdfIn PDF document text
    • https://gosidobesek.weebly.com/uploads/1/3/4/0/134017516/2b26eca5f3b57.pdfIn PDF document text
    • https://cdn.sqhk.co/bemapebe/icYFN9o/jebomilodarigon.pdfIn PDF document text
    • http://tehnotop.space/bovukefagekazemukewirqr559.pdfIn PDF document text
    • http://glawerry.online/dead_man_walking_song_christianfc16o.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/lunojol/buffalo_news_fishing_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/xalutize.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/braun_series_9_9095cc_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/29705493667.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/sojiwoxizekuj.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/national_auto_care_warranty_cancellation_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/food_diary_template_doc.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_off0000e0dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DC 5508 bytes
SHA-256: d473e75c418c309afc109bbeba61a47aa23e578cd80131ac85c6ba082b407955
font_01_sfnt_off0000f3b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B9 11144 bytes
SHA-256: 600e35a19356d8708f0fb920ea68376d23aee90fdd9baf0e0d340ef7e33b5835