Malicious PDF — malware analysis report

Static analysis result for SHA-256 8df0be845a16ae1a…

MALICIOUS

PDF

74.6 KB Created: 2021-02-05 06:32:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: f7a75224adae36d587d5f5ddb7280e0d SHA-1: 82a14ab75d21a11f6512a71e5eda8b4273b0e7e9 SHA-256: 8df0be845a16ae1ae2ed3af787b508b162d22bce0ea4b1f0ac8457340785a97c
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/shook?utm_term=how+far+can+you+hear+a+plane In PDF document text
    • https://static.s123-cdn-static.com/uploads/4407784/normal_5ff1f31eca4a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417983/normal_5fc5af7c378f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389568/normal_5ff4b8a7a853f.pdfIn PDF document text
    • https://zunenevalomedo.weebly.com/uploads/1/3/4/8/134855990/vixesetetotuwuzopi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478378/normal_60081b7fc30f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477873/normal_60159e7f0f766.pdfIn PDF document text
    • http://getveran.site/bag_making_booksn4mvv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494883/normal_601575992fd79.pdfIn PDF document text
    • http://fdvsefwfrw.space/benim_hocam_matematik_konu_anlatmu4fvk.pdfIn PDF document text
    • http://websporizle4.com/tugunadiwenapatekorinw2ldn.pdfIn PDF document text
    • http://zimejitudik.iblogger.org/76946384033.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sajetubaj.epizy.com/pobokifovesuredud.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/navy_sea_cadet_uniform_store.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/turnover_tax_form.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/bawudisubevef.pdfIn PDF document text
    • http://febarufowit.epizy.com/padajunukis.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/pokudokimag.pdfIn PDF document text
    • http://pamakejexo.epizy.com/badminton_mobile_game_free.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_off0000e586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE586 5080 bytes
SHA-256: 1694e9a88d53f47dcc2654885040f197c9ee12e387a5be541e85d540e4aa7eab
font_01_sfnt_off0000f6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E5 11316 bytes
SHA-256: 9fa6e32b5c88206c31fe89f04bfc24e14e42472d75fcc25669fabfcc87ad2ebd

Open this report in the interactive analyzer, or submit your own file for analysis.