Malicious PDF — malware analysis report

Static analysis result for SHA-256 22aeb116005daaf1…

MALICIOUS

PDF

42.9 KB Created: 2020-10-06 21:20:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 26f33506552aa17fc698cb5df86eb3b9 SHA-1: f90487a34a47d51dae3efdee356357209cadc595 SHA-256: 22aeb116005daaf1f5ca7521d289d7bd1032ce18e1823400510be7a1a950b4d4
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.link/pify?keyword=insectonator+zombie+mode+fly+anvil+fly In PDF document text
    • http://naloxi.stmaryslee.org/uploads/1/3/0/8/130815097/2389d7.pdfIn PDF document text
    • http://files.ljgartappraisal.com/uploads/1/3/1/3/131384643/zopul_bosugetorofew.pdfIn PDF document text
    • http://tedejope.rootsnwings.org/uploads/1/3/2/7/132741508/wugavopovuja-tolekapiv.pdfIn PDF document text
    • http://letiredi.paulashbyjohnsonphotography.co.uk/uploads/1/3/0/8/130874284/jotaninifutomaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5087dbd4-b843-4079-bac1-b74d1cb320f2/tezuwawavesagimanorogon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8669dc7-9ba8-4ae5-93b9-347be33a2bcc/37052124909.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2126c3f-31bb-4744-b89a-94490da22fd3/41400174280.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b12ec9e5-1107-4f69-b02a-139b54719bf2/komanepuwenobed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4c75153-8847-4e29-9e71-17570ed91563/wisiwegitonenidor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f4d41d8-0fe5-4e24-8365-a78b85171288/powovuwodobonenijef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/665bef8e-425d-429b-840c-3339e873a769/44542277156.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e87aca7-05c4-4304-886a-ae7399d9d57d/46234453909.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c05721c5-4cd5-417f-aad5-13297b12b99e/jitewogegulovatugajapano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae6a1bc6-c510-40ba-b487-42ff95a5dc19/34057336186.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dc7cefc-5002-44b3-99ab-d1c8d8c44d43/xedim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/352e13f5-7ad4-4775-87fa-bb91935fb925/wudamadosetiverotezenez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b9e9bf0-8ffe-466d-a820-4d03979b0623/rodejowawijazumenawag.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_off0000682d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x682D 5456 bytes
SHA-256: 3af5c4371a84cf8d9a07a3ea4b75a8a711b33853b756142aa9c4b9c631414215
font_01_sfnt_off00007abe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABE 10392 bytes
SHA-256: 48c9c335d4a27a7f891a1f2253470e9eddf1be69aeba537cea1dfbdd027ea224

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