Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb1f19927534ea39…

MALICIOUS

PDF

71.1 KB Created: 2021-03-02 21:05:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 872b14bae64995921744cd3726faa612 SHA-1: 95e680901a2fd15fefa00b30d0528d9d24a2720c SHA-256: eb1f19927534ea39c745218fdf7b5beaecdba65a430b9da61a2fb3ecdc1405dc
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://gimoguvi.ru/award?keyword=how+to+use+iphone+11+camera+settings PDF link annotation
    • https://cdn.sqhk.co/bogijifaviba/j9jd9St/impulse_response_formula_derivation.pdfIn PDF document text
    • http://tajuliwelofiti.medianewsonline.com/30013170762.pdfIn PDF document text
    • https://wetevuwerego.weebly.com/uploads/1/3/4/8/134896505/5304853.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/Brkshik/nabowebobipaxagixemu.pdfIn PDF document text
    • https://cdn.sqhk.co/dekawako/ehaPgfH/vifaboviviposukerepej.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/hhjihTi/togekuguworufivelakozup.pdfIn PDF document text
    • https://cdn.sqhk.co/vifutetax/WsghFNf/call_of_duty_zombies_apk_mod_download.pdfIn PDF document text
    • https://gitizurozid.weebly.com/uploads/1/3/0/7/130775734/notebidonumu_xivil.pdfIn PDF document text
    • https://cdn.sqhk.co/leburogutu/iejgiiS/85933508800.pdfIn PDF document text
    • https://buwigare.weebly.com/uploads/1/3/5/3/135308802/sufizupezuk.pdfIn PDF document text
    • https://cdn.sqhk.co/repudodo/jejfmje/22170492482.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jowawaba.atwebpages.com/john_deere_190c_price.pdfIn PDF document text
    • http://pedirite.onlinewebshop.net/46086425003.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_off0000d9c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C5 5420 bytes
SHA-256: 36aaeaefb363c3760ddc60dbdd0ccaec410c689e3fb98737764b41c1f7273ea2
font_01_sfnt_off0000ec24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC24 10464 bytes
SHA-256: 8c6ace3490fdf286b541e18ed895c0b428b5280a9ed04e06eb4a56c9d47e6d79