Malicious PDF — malware analysis report

Static analysis result for SHA-256 c329e3cd151873b4…

MALICIOUS

PDF

70.3 KB Created: 2021-02-20 14:54:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a57c6e484cacd58762445afa1cf9e83a SHA-1: ecc0023daaf94abd1ceeedb52297d9baef1872be SHA-256: c329e3cd151873b4879e4b3c8d0af863aa77318a68e392c373349ab1b7a20fce
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wb?keyword=how%20to%20get%20bhop%20in%20cs%20go PDF link annotation
    • https://cdn.sqhk.co/dunokufimove/dg2iiYq/paint_blast_4x4_tv_shop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365582/normal_5fcc699a863f4.pdfIn PDF document text
    • https://cdn.sqhk.co/gebitasixa/gEfvlP0/fusuletoxiwol.pdfIn PDF document text
    • https://cdn.sqhk.co/gulifunanale/igtjiPq/best_video_downloader_browser_for_iphone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456369/normal_6000f442afb2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493602/normal_601253d49b7d6.pdfIn PDF document text
    • https://cdn.sqhk.co/bidekidarub/jag1phe/bawovujadixewuwekef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379379/normal_5fe3ac853f11c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459922/normal_6021c21b319db.pdfIn PDF document text
    • https://resezavurafufok.weebly.com/uploads/1/3/1/4/131407395/9799469.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/wejuvono/fill_in_calendar_template_april_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/38836673531.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/6599140951.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/26900156496.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/kepalomix.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_off0000d7ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AC 5048 bytes
SHA-256: ccac74e4454c83127ed64024213fd5c122ca175eb2bf8f9f190253ca9b664d65
font_01_sfnt_off0000e8f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F8 10400 bytes
SHA-256: a7a25967cd3df004855e9fd09c9d96567e983b64e85b16e59216b87fd1d83ed3