Malicious PDF — malware analysis report

Static analysis result for SHA-256 b92524ea931240ec…

MALICIOUS

PDF

63.4 KB Created: 2021-02-15 01:56:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 904bc4ad1a27ecf038f8bb667242ca7f SHA-1: b9f1bec091ca2d3f58dabffab64b673b05e6bb9c SHA-256: b92524ea931240ec95dae568f32b218662807813ae861945efa00b712c8edff5
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://maypoin.ru/wix?keyword=led+rave+glow+sticks PDF link annotation
    • https://wavixozuxukoreg.weebly.com/uploads/1/3/1/3/131380445/zonodidegevenu-tapegodujot-suvovexu-noroma.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabudoxuwa/ihjHOgQ/74513891434.pdfIn PDF document text
    • https://powotatetodo.weebly.com/uploads/1/3/0/7/130738650/bebagedomogaron-tavodaxemozepij-degamidufuzitan-taves.pdfIn PDF document text
    • https://basitonivi.weebly.com/uploads/1/3/4/5/134584834/nejuraxugeni_bixodurobobe_xofota_relofabiwuna.pdfIn PDF document text
    • http://managerprogram.live/guilty_crown_departures_piano_sheetm3m5b.pdfIn PDF document text
    • http://5-euro.info/certificate_of_origin_european_union_form41s2j.pdfIn PDF document text
    • https://niregesop.weebly.com/uploads/1/3/0/7/130776037/visilal-mapakademosawe.pdfIn PDF document text
    • https://lovarewido.weebly.com/uploads/1/3/4/3/134322716/5516606.pdfIn PDF document text
    • https://rinuxusopav.weebly.com/uploads/1/3/4/6/134679155/9983302.pdfIn PDF document text
    • https://kegozogoro.weebly.com/uploads/1/3/4/5/134525602/zidaxe.pdfIn PDF document text
    • http://ryukzak.digital/banjo_movie_song_bestwapjf04a.pdfIn PDF document text
    • https://sakojokotinij.weebly.com/uploads/1/3/1/3/131379540/fiturabab_vosegererato_visuv.pdfIn PDF document text
    • https://cdn.sqhk.co/nenakowi/gjkrX5H/49195470251.pdfIn PDF document text
    • https://cdn.sqhk.co/zalivelo/jLLJncp/kerigalito.pdfIn PDF document text
    • https://vanazufir.weebly.com/uploads/1/3/2/7/132740694/fitimok.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/zopenave/46695197180.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/vdp_system_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/christmas_drama_background_music.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/92465358280.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/shadow_demon_support_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/tamil_amma_album_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/broadcaster_pro_manual.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_off0000bbfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBFC 5264 bytes
SHA-256: dfdb4dd773f2666e3e41d70eb261c047818f285bd450d0c05e4e3234169a3623
font_01_sfnt_off0000ce11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE11 10124 bytes
SHA-256: 0b77699183b6687b2ce92db12f7d2351d53c6184cdf6bbc0f844e26c000132ab