Malicious PDF — malware analysis report

Static analysis result for SHA-256 f138a253c69edce0…

MALICIOUS

PDF

71.9 KB Created: 2021-02-17 07:23:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a943a534d2f8560e52f8c2666f316574 SHA-1: a4e47a3764bb444365f5228dbca5a0c80c836e08 SHA-256: f138a253c69edce0648f3cea61f8e447b56918e33035857c90ffd17452a6be12
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=silver+dollar+city+donation+request PDF link annotation
    • https://cdn.sqhk.co/vilonunufuk/FiahDjh/sanubuno.pdfIn PDF document text
    • http://italiahot.space/kopoguximiwur6i66.pdfIn PDF document text
    • https://cdn.sqhk.co/lonubugogere/hYjvM5k/notixelekuxif.pdfIn PDF document text
    • http://creamwalls.online/40895188167y6h6r.pdfIn PDF document text
    • https://cdn.sqhk.co/vilitemeru/bhajjgc/68242699771.pdfIn PDF document text
    • http://yourdesk.website/50464983267dadru.pdfIn PDF document text
    • http://topchambre.xyz/152461652661ji9r.pdfIn PDF document text
    • https://tefovaxosu.weebly.com/uploads/1/3/1/1/131163863/b721bb442.pdfIn PDF document text
    • http://vannabanyavsedela.xyz/37049504168v42jx.pdfIn PDF document text
    • https://mevamakokuvafas.weebly.com/uploads/1/3/4/0/134040887/vinafejinabo.pdfIn PDF document text
    • https://xozipirun.weebly.com/uploads/1/3/5/3/135324749/ef9b6e3.pdfIn PDF document text
    • https://jukuxalubena.weebly.com/uploads/1/3/1/4/131453985/4eeb6aa6cd3c.pdfIn PDF document text
    • https://zisidolig.weebly.com/uploads/1/3/1/3/131379992/4183087.pdfIn PDF document text
    • https://gufekesunix.weebly.com/uploads/1/3/4/8/134888283/zewugu_rapumakupu_kisasapifafof_terudib.pdfIn PDF document text
    • https://sisuveraxom.weebly.com/uploads/1/3/2/7/132740665/sifogosoxogifilam.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/labitajaxatufib/mawefewofelu.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/what_rank_do_you_have_to_be_to_be_a_pilot_in_the_air_force.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/lazuwiwigi.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/clovelly_golf_club_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/angry_birds_setup_for_pc.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_off0000dcd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD4 5324 bytes
SHA-256: 3927c4e65d08d699b213ce415b307c16bef93c280c80760fbc9bc78f9dbf40cb
font_01_sfnt_off0000ef07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF07 10324 bytes
SHA-256: 259e8850baaf026afb11fa8ca7a108f641ed79b9b591ce29e8108f2946958781