Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce3887d2bc1bcf8b…

MALICIOUS

PDF

72.2 KB Created: 2021-02-18 23:27:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f69300f6230f80e27f674d3c3a870fea SHA-1: 333e4c791d7f1854e500eaa9016427dbe3fa4a3c SHA-256: ce3887d2bc1bcf8ba2cd589cfa9b7fb6b7bc96518dacb063b23a668db43b5e14
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://maypoin.ru/wix?keyword=tipos+de+deportes+en+ingles PDF link annotation
    • https://dorixakogika.weebly.com/uploads/1/3/6/0/136051108/2c5fd33.pdfIn PDF document text
    • https://cdn.sqhk.co/gapekozuwa/Yiem4ii/oklahoma_state_football_schedule_2020_tv.pdfIn PDF document text
    • https://soravetojovon.weebly.com/uploads/1/3/4/8/134890923/7994221.pdfIn PDF document text
    • https://jorobeperepi.weebly.com/uploads/1/3/1/8/131856290/9100481.pdfIn PDF document text
    • http://fusobilel.iblogger.org/81710930026.pdfIn PDF document text
    • http://natlab.ru/tuzozobolibovozopojusisn7t31.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/DEzhjNt/56829144111.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/kIIgf6B/roxexebinasupi.pdfIn PDF document text
    • https://noxagutut.weebly.com/uploads/1/3/4/4/134483949/zawevevewuximi.pdfIn PDF document text
    • https://fegopamaxu.weebly.com/uploads/1/3/4/8/134896151/73167284f.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/begijufadi/birthday_cake_pics_with_name.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/alphabet_worksheets_for_lkg.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/boltanski_luc.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/xevuwomufofexekisorozipoj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE02 4868 bytes
SHA-256: 0c027d86bb4a855528540e8ab79e71ddc58612f62efa50750eb8078f9e078a49
font_01_sfnt_off0000de97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE97 3940 bytes
SHA-256: e88311ea2d2e68ee10f90806ba21c029d275378842919fbff6bb51cd3c355886
font_02_sfnt_off0000ed49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED49 11184 bytes
SHA-256: 8eca27a05adc834ef0eae1d58991493c4f77a00e6b5f93a2afc888ab98ace13b