Malicious PDF — malware analysis report

Static analysis result for SHA-256 27822a8f4e51a6da…

MALICIOUS

PDF

70.0 KB Created: 2021-02-19 02:54:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 7c76835482a4c136d0eb5040bf0f4c3e SHA-1: d8c61f1c042d04c6873a67a85a04b7375f1f73dd SHA-256: 27822a8f4e51a6da9a409caba077abc048b93623b822859a60b2bfbaccb5bfd4
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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=appm+exam+archive+2360 PDF link annotation
    • https://cdn.sqhk.co/bigulikexupa/cHPJhga/69098972855.pdfIn PDF document text
    • http://1offpark.xyz/dungeon_defenders_3_release_dateftucb.pdfIn PDF document text
    • https://zemizipip.weebly.com/uploads/1/3/4/0/134098502/wavexixidokedo_pazajuzuledogak_remasuvoj_zuxelevu.pdfIn PDF document text
    • https://bobiwagimozud.weebly.com/uploads/1/3/1/4/131406821/fafenilixako.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/5160178.pdfIn PDF document text
    • http://idealsit.space/31287706110fcdh4.pdfIn PDF document text
    • https://zujamabosav.weebly.com/uploads/1/3/4/3/134363941/redumavo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tosevud/wojusudilagufopulesum.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/chapter_7_cardiovascular_fitness_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/bigunas.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/traductor_de_portugues_a_espaol_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/9259645862.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/45032980744.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/kutijaxisonewawa.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/organismal_biology.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/vabarapezogomuwomiso.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9D5 5164 bytes
SHA-256: a9798aff0de1eada67254cd8a39c82f98dbe70bfb8e729665dd45763e01181cb
font_01_sfnt_off0000db54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB54 9896 bytes
SHA-256: c98db28eae4aa5f400f7fd13bf3c926de195c4b73f29253bec80b8784164fc95
font_02_sfnt_off0000fd4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4A 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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