Malicious PDF — malware analysis report

Static analysis result for SHA-256 b09e88c10b277494…

MALICIOUS

PDF

73.1 KB Created: 2021-02-28 18:00:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8d44b8848650117e44fe49199832f7f0 SHA-1: e92f0af16e6dfb36e5a419feb4d5289ff36d0fa6 SHA-256: b09e88c10b277494b5beeee7550274a4b99e61b3a0a37bbba2390b20d6cff470
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/award?keyword=white+christmas+tree+lights+walmart PDF link annotation
    • https://lasogevedona.weebly.com/uploads/1/3/1/3/131398076/letubigar.pdfIn PDF document text
    • http://wgathering.org/sarujulokolk8laj.pdfIn PDF document text
    • http://olx-delivery.cc/cho_gath_guide_s9ms3tw.pdfIn PDF document text
    • https://cdn.sqhk.co/zomuzesirira/bveQ4hh/vibemuwage.pdfIn PDF document text
    • http://makamar.online/442946278940o109.pdfIn PDF document text
    • http://vclean-sale.shop/who_is_arthur_ashe_daughter9xex3.pdfIn PDF document text
    • https://zezevibowavaki.weebly.com/uploads/1/3/4/8/134854125/kalisizususimatuga.pdfIn PDF document text
    • http://fituxem.sportsontheweb.net/15743900344.pdfIn PDF document text
    • http://milky-rp.space/oster_oven_with_air_fryer_price_in_philippinesms4p0.pdfIn PDF document text
    • http://tehnotop.space/rumigonawevf9wu.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/piradi/robbery_bob_3_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/videocitofono_bticino_classe_100_v12e_manuale.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/kubitevezi.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/cracked_software_sites_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/balance_sheet_format_according_to_gaap.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_off0000e2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BF 5316 bytes
SHA-256: 6060dd9a689550257f6c31e7d462a4a1230dfb324fbf94f382a2b1c08246a9e7
font_01_sfnt_off0000f4bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BD 10056 bytes
SHA-256: 6e7a06306325cbf390433de6b166a91e362d05869a91d724bd4fe023bce3f8ed