Malicious PDF — malware analysis report

Static analysis result for SHA-256 f07c6c810e89e801…

MALICIOUS

PDF

63.2 KB Created: 2020-12-20 14:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 1307a3a8ef4d2847f00756ce4a4e7269 SHA-1: ef69d9546e56bf036718b12ef10cc2cfe7a72540 SHA-256: f07c6c810e89e801687cded50d21d94bbe17e70f66062fac048d13a5402fc8d5
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a lure for free downloads, specifically mentioning 'Dodge challenger wallpaper for mobile', which redirects to a suspicious URL. This URL is flagged as an SEO redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent.

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://trafficel.ru/123?utm_term=dodge+challenger+wallpaper+for+mobile PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388596/normal_5fd792aad02db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483610/normal_5fd3b1efe721b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447250/normal_5fd91c130b6dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393041/normal_5f8f5464b8f6b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/6cad4f2b-8c34-47b8-a0fc-93648ab14b81/shark_professional_lift_away_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dbb0b76-9a1d-4e1e-b2bb-faa3dc36cc8b/funobujuzowadonapamew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3856960b-f737-4da9-b68e-b796da559f4a/comparative_and_superlative_degrees_of_adjectives_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90ac29cd-f938-4419-a9c8-15ed0ca97cbd/burgess_1443_propane_insect_fogger_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fac3c206-8b8e-4caf-873c-887f56064c57/verbos_irregulares_en_ingles_con_pronunciacion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09a82f1a-c02f-4561-b9c3-38f21cf9d784/boiling_point_of_ch3ch2oh.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8056e2c2-937f-456b-afc1-efc8b2a1d1c5/lidamawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17cdfcc3-812b-451f-8bdc-f7c241c5a718/ielts_speaking_test.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

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ad2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD2D 5328 bytes
SHA-256: fa4e7d1c54e391c864770a35cd6c4b3bea221c5cfb7edbcbb8466684d375ef36
font_01_sfnt_off0000bf23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF23 10124 bytes
SHA-256: 3a9e32021a5661a70222b5cb9f6079e1253a28a2bd7e7087bbcc6a9df7c3b3ea
font_02_sfnt_off0000e1c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C6 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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