Malicious PDF — malware analysis report

Static analysis result for SHA-256 65dc62b3d22287d8…

MALICIOUS

PDF

73.0 KB Created: 2021-02-03 21:42:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3a83525ad53f3530f668a4b0e4c39552 SHA-1: 9966bf008026c28978fd025034f587c33b6c8c73 SHA-256: 65dc62b3d22287d83b60521209a48354efa803fce61d920b505074014fcdd330
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://crophysi.ru/wb?keyword=deep%20sleep%20guided%20meditation%2020%20minutes In PDF document text
    • https://wixepivod.weebly.com/uploads/1/3/0/7/130775856/kovosojolugumipof.pdfIn PDF document text
    • http://manaluw.iblogger.org/80785933879.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530868/normal_5fd678d2b5793.pdfIn PDF document text
    • https://cdn.sqhk.co/madumubo/ticYdji/98339365372.pdfIn PDF document text
    • https://tuzunogosur.weebly.com/uploads/1/3/0/8/130815213/e821c8daf8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487197/normal_600329e5cfd35.pdfIn PDF document text
    • https://biwaxosele.weebly.com/uploads/1/3/1/4/131437294/703066b9c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403689/normal_5fc577428446e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406202/normal_5fed9d149043b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411944/normal_6007dcb82eacc.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/juvosi/78410201658.pdfIn PDF document text
    • http://pikarofuwab.epizy.com/safaxajo.pdfIn PDF document text
    • http://varosuvavim.epizy.com/bepumujujavowo.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/28047808607.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/97475156578.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_off0000e0ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EF 5456 bytes
SHA-256: 57d995729d4b99c7a616f0181fa0c087956d9c6a56dc9dbc19144a60420f6442
font_01_sfnt_off0000f371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF371 10560 bytes
SHA-256: 986a411f8f9cda8a85ffe00bac9ee3a025906a2c23ac6bf000e562bfdf3aeddd

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