Malicious PDF — malware analysis report

Static analysis result for SHA-256 76e1e7793b7cf1aa…

MALICIOUS

PDF

67.8 KB Created: 2021-02-13 16:29:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1dff0b3c84ad87e1851e2365c34bf488 SHA-1: 555bc185160240a72c6582112bb5d24ad9929dc5 SHA-256: 76e1e7793b7cf1aa9227b739703e4b8b201a9ded86668446a8bbde958b9c77b0
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://baarspo.ru/wix?keyword=pedigree+analysis+problems+and+solutions PDF link annotation
    • https://cdn.sqhk.co/durotula/ZtNrFjj/world_war_z_ps4_price.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446914/normal_5fee7e54b8978.pdfIn PDF document text
    • https://cdn.sqhk.co/wixumenez/iijgLWv/astro_lords_oort_cloud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479932/normal_5fc7c6add962f.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/fDPhaib/78091881449.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467927/normal_6025a858cae13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416918/normal_60136de3921a8.pdfIn PDF document text
    • https://wegoboxup.weebly.com/uploads/1/3/4/7/134772399/mizivelevopusopu.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/2AgcjgE/mavax.pdfIn PDF document text
    • https://cdn.sqhk.co/mewivupa/cFArib5/8594458397.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451228/normal_6020b57632b3c.pdfIn PDF document text
    • https://cdn.sqhk.co/kufalavoxig/1wwTJE9/98307585725.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/simujix/small_estate_affidavit_texas_form_free.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/43927028986.pdfIn PDF document text
    • http://xaxuvep.epizy.com/wojuvawediposevipexaseben.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_off0000cbd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD3 5524 bytes
SHA-256: 618f5797e118e2d4ecdd24e1e3cb8b7eb0ecf507fcb52cd0ba675cc6b45d519c
font_01_sfnt_off0000de85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE85 10508 bytes
SHA-256: 5808f741189f8fff9f945483ad4bafb65447e26a8cc2c4a54635678acfca970e