Malicious PDF — malware analysis report

Static analysis result for SHA-256 a69fbd308b21ff38…

MALICIOUS

PDF

60.0 KB Created: 2020-11-11 08:06:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: d4d271f1c4d0efd8988d2cc29076b2d6 SHA-1: 363e6f47e6a6f51590ad8f7f00eb9cba74ecf455 SHA-256: a69fbd308b21ff38f3b19a69c8f0468ef297510057086685cf86a30e0fc78d70
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafftec.ru/123?keyword=t+shirt+size+charts+for+women PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366958/normal_5f8a6f1da70a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366024/normal_5f9338cc765cd.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/gajabedafot/38817869315.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cfe66d6-1e30-4555-8e35-fae15ff818e5/werumasijomaxafiwuma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cef1dfbb-2e9c-4d13-a949-574f373dfd38/conectores_de_redaccion.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/42398140939.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5922e166-8ce3-4a35-b617-bd9816dc1bed/siviwozojilaropoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c595d0ae-2bdc-453d-aa2c-9abe8b9c3fce/onkyo_tx-2500_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/vevirufewotom.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/faretosikagiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51c1c9e2-5f21-444b-bbe0-2f80548497d3/singer_tradition_2259_sewing_machine_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d77217ca-4cac-4c11-bd87-21b85d4ee0ec/87556296857.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/77647071523.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/83485190336.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_off0000ae85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE85 5180 bytes
SHA-256: f0490d495853373d0f173411e161d5485ea70e061c5fd388d9f133b5b78e6ac9
font_01_sfnt_off0000c014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC014 10180 bytes
SHA-256: 38e73269cd1f20c21a217a60ef496c1609958c16b94e8e530fc32a597f74d499