Malicious PDF — malware analysis report

Static analysis result for SHA-256 98643ddb28f831fb…

MALICIOUS

PDF

66.6 KB Created: 2021-03-12 03:53:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5a073bbd41930118fca9873886efe24e SHA-1: 82546f2d260c2fd3e7f76af3b1713e81d6510622 SHA-256: 98643ddb28f831fbc981e521f0aabc280a1785191e36543a243fa8a06dfb497e
186 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=codon+worksheet+pdf PDF link annotation
    • http://mx50off.info/nupafemuwiruockf.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/aOOfgfy/mopagera.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392209/normal_5fc9f769ba931.pdfIn PDF document text
    • https://cdn.sqhk.co/punenekebi/iihFgh2/luke_combs_lovin_on_you_official_video.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446921/normal_6049ebc6a60bc.pdfIn PDF document text
    • https://cdn.sqhk.co/godezixibufo/hd3be2h/pomegalajesojezigetut.pdfIn PDF document text
    • http://new-volosi.ru/starcraft_2_remastered_free_downloadw3voi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486356/normal_6003f61746a63.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387706/normal_5ffaa140c6721.pdfIn PDF document text
    • https://cdn.sqhk.co/jutusaxibu/iahgZib/xijuwunubekupoledof.pdfIn PDF document text
    • https://cdn.sqhk.co/tizadufof/diehdNp/ashoka_movie_hd_video_song.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/chdOgj8/nanofupan.pdfIn PDF document text
    • https://cdn.sqhk.co/sanozusu/hg834ji/sulilibegamufufipaxawegu.pdfIn PDF document text
    • http://kulinar2020.site/zafepuvibunawuduluppv00d.pdfIn PDF document text
    • https://cdn.sqhk.co/gijimexuv/cXzjiFU/24161979173.pdfIn PDF document text
    • http://serviceforyou.site/kabilenimefagob7vz4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477147/normal_6033a513bb54e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9f5bcc56-a059-4f00-ae85-604acd6a3d2d.filesusr.com/ugd/ac9354_45e4029174954be39158e5792d548dfb.pdf?index=trueIn PDF document text
    • https://510b81f6-be4e-4e40-9acf-3f60af495837.filesusr.com/ugd/5f226b_85ac214759be49bbb62d0452af291cfd.pdf?index=trueIn PDF document text
    • https://dfa52777-3edb-460f-9b14-ca5101cd4ecc.filesusr.com/ugd/5360f8_7753f087d3eb43eca829a3f8c6839951.pdf?index=trueIn 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_off0000c980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC980 4948 bytes
SHA-256: 32106e0267466b5554ea249943a8368b8009ce3ae2294adc0b1641fedafc5065
font_01_sfnt_off0000da63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA63 10208 bytes
SHA-256: 6849cf5cc35635237f8680b02fce83299e9705f1ca03f56078f1aff6940e8343

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