Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bf8485fbddd198e…

MALICIOUS

PDF

72.4 KB Created: 2021-02-13 04:24:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 492ec51952ea3845121385b2b32c838c SHA-1: 90ceb03f2fcb5ab47a0923c86a299e03b984dfd5 SHA-256: 5bf8485fbddd198efdda3ca6736ecaf5b52306f39edf1081e84cadd471ac25e5
254 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
  • 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/123?utm_term=airtel+tv+apk+mod In PDF document text
    • https://cdn.sqhk.co/xejudawadoni/XRigAgc/pupugijalod.pdfIn PDF document text
    • http://importants.space/64815271248hfban.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460457/normal_6021ce680a6f9.pdfIn PDF document text
    • https://cdn.sqhk.co/daxerarugak/ha1eMEq/42326198179.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381085/normal_5fec285615e50.pdfIn PDF document text
    • https://legukofa.weebly.com/uploads/1/3/5/3/135318177/33e6fb7704.pdfIn PDF document text
    • https://dawekemukodo.weebly.com/uploads/1/3/4/4/134491409/b7be097.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495975/normal_600728f4f21b0.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/bifamomove/92642755665.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/free_video_background_easyworship_2009.pdfIn PDF document text
    • http://tujefozumuresul.epizy.com/18173802273.pdfIn PDF document text
    • http://pavasokunise.epizy.com/59702805161.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/dipew.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/pdf_splitter_cnet.pdfIn PDF document text
    • http://xeravujowa.epizy.com/antivirus_gratis_android_migliore.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_off0000dd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD04 5040 bytes
SHA-256: aeed683bc130b775a9d4efa360ef69c62caa1f8acf235e868fd7cd34c7b7c88e
font_01_sfnt_off0000ee1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1B 11456 bytes
SHA-256: ca30c76c7c38127643bdbef05d2867d817a95b5ab8faecd2b3488c94a5161e3e

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