Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7d6cb1ac23edf4e…

MALICIOUS

PDF

41.9 KB Created: 2020-11-09 12:52:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: a2bfcfe077c1ebb92cf15a3ae270515b SHA-1: 0d7feae8620af8ecf17cb96f1873ee7846440633 SHA-256: d7d6cb1ac23edf4ebe5064d1ec4b095e9fb5bc9ad16dac8353d3779895bcbcf6
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://trafffi.ru/aws?keyword=clarkston+football+game PDF link annotation
    • https://relotozaku.weebly.com/uploads/1/3/4/2/134266658/lufibidox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369901/normal_5f88243388018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467274/normal_5fa6b2bee8895.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378393/normal_5f9ab33491a51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384836/normal_5fa049a86ac64.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5aecf36-eb90-4213-a18a-6cd8631b603a/transom_window_sizes_12_x_66.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/591189cb-5c6f-4de8-8f65-7b5171bf91d4/96423999891.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25af1cf1-133c-446e-a1c3-1e09872a47cf/menaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/847de5ac-c083-449d-b972-e90a74279a4d/2515903514.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05c782bf-a3d4-4cc1-aeff-2424d609a78a/skam_temporada_1_capitulo_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8029d75-3657-4671-b826-2f852a3bc736/ken-tech_atomic_radio_controlled_alarm_clock_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/blank_clock_svg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f28d5bf-698a-4aa2-9bf6-589d2f2638e5/como_hacer_un_cuadro_comparativo_en_canva.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_off0000666a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x666A 5196 bytes
SHA-256: 86becefad045180051fe87f0248fd040a07227162a8ae991793d0add65dc5a21
font_01_sfnt_off00007807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7807 10232 bytes
SHA-256: bba23c857e6ddc7368283837dd260224c78c4198a25db301b490202e2974c65b