Malicious PDF — malware analysis report

Static analysis result for SHA-256 daf0e50b7b52b765…

MALICIOUS

PDF

38.5 KB Created: 2020-11-08 03:42:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 329587dff031b652b53e3865e4fee3b5 SHA-1: 370ad4154366c94edc1d371350d008245e9be109 SHA-256: daf0e50b7b52b7651ebb5f13335fac359f218025884c4d65ce55735d3cfb4384
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://trafficel.ru/123?keyword=o+to+be+like+thee%252Fyoutube PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385435/normal_5f8db63c2f37c.pdfIn PDF document text
    • https://tojaluteder.weebly.com/uploads/1/3/4/3/134384479/fafonuroke.pdfIn PDF document text
    • https://fanarise.weebly.com/uploads/1/3/4/3/134377412/b2cd3.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/zokokamu/spring_run_elementary_school_website.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/biogeography_brown.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/924b5f0e-bc76-4bf3-b8c0-3284d2b1f272/88352138465.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/75355615840.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edce290c-9a36-4fb4-ab3b-72fef1f0c2da/16073435294.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/1963154193.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf9116cd-33e7-4272-b53c-a26f3422e554/rokam.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/dofus_osamodas_guide.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_off00005c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C03 4660 bytes
SHA-256: 70859db1dad59027d96599043b1ec5655ea5b68e72bc3bc754ce39e49fffdcd6
font_01_sfnt_off00006be6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE6 9948 bytes
SHA-256: d08c19d847f2dbb7820697b150eb354346bf0826957fc5a78f6321eae1d4e0c2