Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f000351bd7072dd…

MALICIOUS

PDF

72.0 KB Created: 2021-02-17 17:15:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 90eba8603abb4c48040ba7cefaed35ea SHA-1: 6e841dbd8c6362cb2b5d16f66f40e8e63bec4f29 SHA-256: 2f000351bd7072ddd05c00cc92bdc08720fc752a75a812d38be1fb818b043ba6
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://baarspo.ru/aws?utm_term=how+much+is+arby%2527s+turkey+gyro PDF link annotation
    • http://kraftmann.su/how_to_use_i-pilot_link_with_humminbirdztwlu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460946/normal_5feb23626765a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365624/normal_5ffed1369d465.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393028/normal_6003542fb4549.pdfIn PDF document text
    • https://fogufufizanalu.weebly.com/uploads/1/3/0/8/130813948/kadorigavaz_wenuzigogure_povojasuwakum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408170/normal_5fdc19dda078f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447252/normal_6021ec76052be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450260/normal_6014ac5d0c5e1.pdfIn PDF document text
    • https://movakesomerinid.weebly.com/uploads/1/3/4/5/134528648/rosixe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465703/normal_5fffb0e87f2ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_601dcf2166dd2.pdfIn PDF document text
    • http://golomashvanna.xyz/castaway_cay_map_2017g3g9r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481520/normal_5ffa2b7b7c356.pdfIn PDF document text
    • http://remontlegko.info/fetozezinucgyjt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451212/normal_5fc6abf729242.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000db6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6E 5576 bytes
SHA-256: fe091c06a43176ff1baf126259d39b9eeb5d8a888b558004cc61922618ae0fe3
font_01_sfnt_off0000ee5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5A 10828 bytes
SHA-256: 0f6380bbe34d72dc1186821e34caf6edee5fb0c549b1e2470af88ec4dd513b7f