Malicious PDF — malware analysis report

Static analysis result for SHA-256 e82df92b4416c862…

MALICIOUS

PDF

191.9 KB Created: 2021-07-14 06:34:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 2e84f737b2ff4917a95311d63b80dacd SHA-1: f27933c4aa84d5d59e09ce55656f49a64c913047 SHA-256: e82df92b4416c86223f9662fe19e125c9ddef75777716f6c282bc370129f90b1
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free movie downloads, directing users to a suspicious URL. Heuristics indicate this is a phishing attempt with a redirector. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to deliver a payload or phish credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9080

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
  • 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://coretry.ru/square?utm_term=fast+and+furious+8+tamil+movie+download PDF link annotation
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee31214d490f672750fb49/1626222881730/51096580143.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e90f1e83ae0c490238525b/1625886494792/jexojad.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed8ed22271a75a72d4e60a/1626181330424/pet_exam_questions_and_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec91d0e0c99b3eb2d3ae53/1626116560570/step_away_meaning.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8f1b02f3c4128e1881048/1625878961145/73785144535.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ecabec97282d6f46942aec/1626123244624/strategic_tactical_and_operational_planning.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee3cd0ab0cb8743be47583/1626225872822/41208669123.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8e7b7d354a5e86a3b0ca/1626115707775/4094905179.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7c06780504e0a7767fdc2/1625800807760/class_6_assignment_science_5th_week.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e800747d3b385c94b70551/1625817204400/leborifagotajo.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000256ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x256ED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00026f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26F04 10952 bytes
SHA-256: 9917392bdd9a68784026b9e7d56f85e8d8ca22ca9ce268c1f2955a068dda4dd2
font_02_sfnt_off00028868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28868 4204 bytes
SHA-256: 0c606d19910e3836597d49e4c22b0e10d77756a03c4475f8473346ebd8d9c365
font_03_sfnt_off000297cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x297CB 25568 bytes
SHA-256: 4ba30468c95d7838a1df4c450a488ec4a8663a9f1423864755fe3d2ec46c29a1
font_04_sfnt_off0002d792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D792 17444 bytes
SHA-256: b61b919d3f29f2e5187d40a83dffed8cb85d8b02b081eafbdee58896c7d50aa2

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