Malicious PDF — malware analysis report

Static analysis result for SHA-256 0baa8814b823725c…

MALICIOUS

PDF

70.5 KB Created: 2021-02-25 08:37:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 770bb15c50ebe26c0cdede87efb4e475 SHA-1: daff6ae48b420c7b92ea062a9526e5a652b55011 SHA-256: 0baa8814b823725cd1b88f2498fe1b321beb1bcf798162057fc52ee6104b32cc
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://seumenha.ru/award?keyword=who+buys+books+near+me PDF link annotation
    • http://micrometerdigital.xyz/mulexixilofujowourvj7.pdfIn PDF document text
    • http://ch-bewertung-2888.xyz/bafawowj0v1j.pdfIn PDF document text
    • https://gegawega.weebly.com/uploads/1/3/0/7/130739786/zataladix_zasafuxoxivu.pdfIn PDF document text
    • http://card2card-perevod24.site/space_treasure_hunters_2_apk5p31k.pdfIn PDF document text
    • https://japutiluzot.weebly.com/uploads/1/3/5/9/135991977/duzadaxod_ropofur_womafit.pdfIn PDF document text
    • http://idealica-italiaufficiale.website/takebupuxoxivatixopima29536.pdfIn PDF document text
    • https://depasosuva.weebly.com/uploads/1/3/4/4/134483816/9465620.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/pulavokaxe/php_algorithms_and_data_structures.pdfIn PDF document text
    • http://wuduzukatej.epizy.com/manuale_casio_cdp-_200r_italiano.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/76090809693.pdfIn PDF document text
    • http://bekonoxidolu.rf.gd/fawitizokekegezomubuvani.pdfIn PDF document text
    • http://perotufusutukes.epizy.com/divulifipuwi.pdfIn PDF document text
    • http://gopogawamo.rf.gd/66121888768.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/school_bus_driver_training_manual.pdfIn PDF document text
    • http://fabovodowep.epizy.com/fftoolbox_cheat_sheet_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/96812601033.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/auto_tune_android_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/pofofufukiwuvupofa.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/22564555018.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_off0000d8af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AF 5212 bytes
SHA-256: 78c4a32d40cccaf90d030c52dcc0bcb3aa8657918c57c805b21b9574974da0f6
font_01_sfnt_off0000ea50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA50 10336 bytes
SHA-256: 477a8b28f4c285bb17ef1720abb50263645350b62aeb0fdfeb8587f38e91d365