Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d56a5a24aa232b2…

MALICIOUS

PDF

69.7 KB Created: 2020-12-10 03:57:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-11
MD5: 31400947acb68134ec430ca49ac03acc SHA-1: ce0fd9da1fe9e2a6da33b577b03ce62756774360 SHA-256: 0d56a5a24aa232b2c4c82b742a5c7f2583af2d801bca761f632d30940c765fec
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://s3.amazonaws.com/jupudizadid/solid_liquid_gas_chart.pdf In PDF document text
    • https://s3.amazonaws.com/tiniruru/97533558760.pdfIn PDF document text
    • https://molawaxurot.weebly.com/uploads/1/3/4/6/134699933/77b0034a51e.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/gre_issue_and_argument_essays.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/elastic_collision_worksheet_answers.pdfIn PDF document text
    • https://trafftec.ru/wb?keyword=las%20frases%20mas%20comunes%20en%20ingles%20pdfPDF link annotation
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000cc9e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000cc9e.bin)
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf080e18c5c478ec094aa/1606283392931/innovited_hid_flickering.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07a89588-45f6-41ea-a491-a69fe6ec43cd/5349807675.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5386f3dfdd95b60f16c7a/t/5fcb55a41df7590d80ddf744/1607161254340/34.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50bdd239b0722914be43a/t/5fc779c15060c93fcd7f339b/1606908353292/drive_in_movie_houston_walmart.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 extracted file (font_00_sfnt_off0000cc9e.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC9E 5416 bytes
SHA-256: 2640a0864bb8447cd964cbbe1e7a4d372d71f21e322f15c59ddb858d95a6dd2a
font_01_sfnt_off0000def7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF7 14028 bytes
SHA-256: 4a9adc76b6907f286a43333e4f086350a0eb68f365794eec85ba56619634bd6f