Malicious PDF — malware analysis report

Static analysis result for SHA-256 a039753b69324424…

MALICIOUS

PDF

66.1 KB Created: 2021-01-06 12:05:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 30f4c5eedc318a78bc0c283ec8023899 SHA-1: de6d622ad4a3760e58b7ab0a407e1769e298c89b SHA-256: a039753b69324424e084bedc3ba671d56eae6187ce83140caad3cccf62c99655
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffe.ru/shook?utm_term=truck+driver+3d+offroad+mod+apk+download PDF link annotation
    • https://cdn.sqhk.co/rajunakeb/FjmihKd/zedinokozot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f8715cc9f31f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393029/normal_5fa28e4b92a46.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/wisuw/handwriting_for_adults_worksheets_cursive.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/cydia_installer_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/536ba3b7-de83-48d1-a473-d9894d2d119b/xyron_creative_station_vs_cricut.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/double_rod_of_condensed_chromatin_forms_what.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea423a80-8a2e-4817-87df-e50cdac9c830/syfy_app_credits.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/lilburn_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/daruzeb.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/lokipokafemonakuvopubumex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68636bd8-0244-4748-a3e1-f957ce7b5b16/42524713338.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c055f09-5615-4d07-9457-d34e02f25009/kokigulikowuxomizop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe6219ec-945f-4f79-a9c5-875dba990303/free_kindergarten_number_games.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/pawazuvo.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_off0000c50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC50F 5452 bytes
SHA-256: fc1b891824e3c335fe1153a1e8de38f5215b25005a647825761286cc900ee9a2
font_01_sfnt_off0000d7a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A2 10408 bytes
SHA-256: e4cb4a3336d18978bbdbc310119b9d05a989e322ee83c3cbe7bcc52f4d7cda1f