Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dfdfe728829af14…

MALICIOUS

PDF

76.1 KB Created: 2021-02-27 10:16:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 80b8b4cf180e30319f88e14d6c785b1e SHA-1: afbaf6cf0ffae26e1cb8456d0f99704d70c27501 SHA-256: 2dfdfe728829af1481fc44e200a387d2ef4ae7fb65cba77837ad312b447a3d50
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://ponafet.ru/aws?utm_term=anker+bluetooth+folio+keyboard+case+for+ipad+air+2 PDF link annotation
    • https://cdn.sqhk.co/merabuvi/jjQhcih/twisted_root_mansfield.pdfIn PDF document text
    • https://cdn.sqhk.co/wakivunet/icjbHMU/90420682822.pdfIn PDF document text
    • https://cdn.sqhk.co/vefuwatak/eEhciDs/find_my_friends_app_for_android_phone.pdfIn PDF document text
    • https://pogiwubuwafax.weebly.com/uploads/1/3/0/7/130775808/puvopirozomaza.pdfIn PDF document text
    • https://bofopigefofimun.weebly.com/uploads/1/3/4/0/134016695/6b096e57c.pdfIn PDF document text
    • https://dawewixorumerix.weebly.com/uploads/1/3/4/6/134633471/beea35da9da9061.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/giladetaluk.pdfIn PDF document text
    • https://cdn.sqhk.co/nabixisaf/cgjig8k/lekifadavisore.pdfIn PDF document text
    • https://padobijitoxu.weebly.com/uploads/1/3/1/0/131070591/rajipo.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/fixararololu/pathfinder_brawler_strangler_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/sweet_baby_girl_images.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/ziwelokimeguxemizuduwol.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/27206667324.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/78698058962.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/android_vs_ios_market_share_2018_india.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/all_bengali_shayari.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/tukukipem.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/motelijed.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_off0000ea70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA70 5668 bytes
SHA-256: 7b6db0890a75bee9d894714c64ddd1505c4055bf2e0d7051d28d14be850ef590
font_01_sfnt_off0000fdc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC0 11072 bytes
SHA-256: 09bf3bdb3b167072e30c519894dbc15945453570f1eb14237f98e0a172b87240

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