Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f38d29795b67c8a…

MALICIOUS

PDF

40.9 KB Created: 2020-11-08 16:03:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: a849b5fd7b9be8c0469d738109a9bd3b SHA-1: 50c7be1e7a3b72fcb9096818938c0baa9003e27a SHA-256: 1f38d29795b67c8a478849257a58503585befff988b7e69ab7846364f8127159
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffset.ru/aws?keyword=black+snakes+in+oklahoma+pictures PDF link annotation
    • https://bidalafurita.weebly.com/uploads/1/3/4/5/134591929/3b1e91ef.pdfIn PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/bagiferotezin-sonebokiruril.pdfIn PDF document text
    • https://melegejisud.weebly.com/uploads/1/3/1/3/131379421/f74559.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fivididadese.files.wordpress.com/2020/11/18087987493.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fcf64b4-3147-4827-9aea-9c33c00e03a5/rerovezin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6bf9eb6-757e-4fb6-91dc-321aa41e2c82/50862439981.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6eb2e968-df70-420f-892c-c2aac6f01733/52185061917.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22c6e9eb-96ec-4ade-932e-27cb5ed43440/vebelimetogeveluzifotak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be294389-0ee9-4054-b265-a3d043cacc93/kopiwujawomegesuxenikivuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbe1b7ee-cb7d-432d-a7f5-c198009fe0e2/bazaxisuwesupud.pdfIn PDF document text
    • https://fefitaw.files.wordpress.com/2020/11/64939725781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0ab40ed-d8e4-41cc-8e09-971e2074c065/95544200276.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/gobelozef.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_off000061fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FB 5284 bytes
SHA-256: 6564858e6d39d13635a45b5de42ef754a59c945d27994af21a1b60c13cfb7200
font_01_sfnt_off000073cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CC 10384 bytes
SHA-256: 5dfb5286887ef4fc55c7ae9a7ef06df3a4a98e8b3c6490d94283d9b0a88ab5e7