Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b2eb5656082ed74…

MALICIOUS

PDF

70.3 KB Created: 2021-02-21 06:42:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 65c034bdc641207f74fb90034e1e54e5 SHA-1: 0b31bc403793debfc2cf610fbda886bbe050e536 SHA-256: 3b2eb5656082ed74cc27fd5b2416acf6111b87c6d110b7e53a4bec5d3c8a82d5
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://seumenha.ru/wix?keyword=wavelength+frequency+speed+and+energy+review+worksheet+answers PDF link annotation
    • https://nujirami.weebly.com/uploads/1/3/1/3/131384028/955279.pdfIn PDF document text
    • https://wesojejupeledaw.weebly.com/uploads/1/3/4/4/134446418/6f3515c.pdfIn PDF document text
    • https://fajizaxaro.weebly.com/uploads/1/3/1/3/131381717/rogimixamumud.pdfIn PDF document text
    • https://jagewimaw.weebly.com/uploads/1/3/4/0/134012974/kenasesob_zogibibo.pdfIn PDF document text
    • https://xufalawat.weebly.com/uploads/1/3/0/8/130814535/8582315.pdfIn PDF document text
    • https://mepanomelisegil.weebly.com/uploads/1/3/4/8/134899905/vimekemale.pdfIn PDF document text
    • https://cdn.sqhk.co/serojimo/iahihhL/62477952479.pdfIn PDF document text
    • https://gitikaru.weebly.com/uploads/1/3/4/9/134901111/4a61df267adde.pdfIn PDF document text
    • https://bopovajo.weebly.com/uploads/1/3/5/9/135966354/246895.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/tofizo/android_spinner_adapter_custom_object.pdfIn PDF document text
    • http://wifotuzo.rf.gd/79235271978.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/christmas_carol_lyrics_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/artist_collaboration_agreement_template.pdfIn PDF document text
    • http://fodarevo.rf.gd/lock_screen_notification_android_developer.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/35029066360.pdfIn PDF document text
    • http://genapixej.epizy.com/wifotovovemo.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_off0000d3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D5 5872 bytes
SHA-256: f4d8fdcd7b9552de9199741ff156cf4503d0d8b3e517687a599b1ae53a56c243
font_01_sfnt_off0000e7f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F2 10556 bytes
SHA-256: 7701732f48296cc87e0e2590c25d830a9d4c1c9d434ab064882e636b97b4242b