Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d32eb9e82a8fce8…

MALICIOUS

PDF

79.7 KB Created: 2021-02-11 01:51:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 07e8a9ffbc5635a81d188fb7266a5023 SHA-1: 6b3d26f20f2aaf10b7ee2804c9c4bf8a2e4ba887 SHA-256: 0d32eb9e82a8fce80e7d6271f29ddf7e7fcb17d67e1a5db7159a55bdf3cab540
254 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
  • 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://crophysi.ru/123?utm_term=homecoming+high+school+ideas In PDF document text
    • https://cdn.sqhk.co/jigavozef/he46ejf/top_hits_2019_listen.pdfIn PDF document text
    • https://gegoviboz.weebly.com/uploads/1/3/4/8/134876631/2268043.pdfIn PDF document text
    • https://webakutukulufu.weebly.com/uploads/1/3/2/6/132683024/pekatubexub.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/7jihijc/donkey_kong_arcade_artwork.pdfIn PDF document text
    • https://cdn.sqhk.co/milatepoz/ibgjGic/97516458690.pdfIn PDF document text
    • https://waxevinibiwe.weebly.com/uploads/1/3/0/9/130969944/4855611.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/ibzhbL8/koraziropugutima.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/Nge6haz/bagiluga.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxiropuwomo/ebgdhiP/58274726434.pdfIn PDF document text
    • https://torevoxun.weebly.com/uploads/1/3/2/7/132712334/ragomubiwu-raterax-xeninegenokesax.pdfIn PDF document text
    • https://rezezeveg.weebly.com/uploads/1/3/1/8/131871466/jagetomak_nimozola.pdfIn PDF document text
    • https://jolejijiwunepa.weebly.com/uploads/1/3/5/3/135334118/zonepezuzivos-pufipulejizaw-lotujemamobonos-zoviwabanujo.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/buponuwebi/tunumorusilelikagefi.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/edmodo_for_laptop.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/garer.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/19339258096.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/65114600272.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/que_significa_ancho_de_banda_en_informatica.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_off0000fa45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA45 5220 bytes
SHA-256: 8f2f44fec5695974e3ded38d244b48c0f77c0b0124f4c4983f37eb681514dd65
font_01_sfnt_off00010bdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BDF 11200 bytes
SHA-256: 1d04a317686652e9b2a641bcfcd498ed236c8472bea65db93269417b3f979262

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