Malicious PDF — malware analysis report

Static analysis result for SHA-256 0847ccd7fbb2da1a…

MALICIOUS

PDF

54.5 KB Created: 2020-11-05 20:40:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: c38356d998fdd299f3ebaf31d79a5f56 SHA-1: 3446d6e00a015cbf3f6b9c354bf3731c30bfc870 SHA-256: 0847ccd7fbb2da1a5ab94ce2636fd57e871469bb660c7295b79fc61596247adc
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/aws?keyword=one+direction+just+dance+beautiful In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379851/normal_5f9649a1805db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370302/normal_5f897a5c6c721.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f891ae6c9098.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/c1f37e37-f3f0-4bb0-bf2e-455ed5353157/rabunavapinugekefivod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25ef3d4e-decb-45ac-8dc8-86a39034a5fd/sonic_bts_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9792b805-f926-4eeb-88b2-a6ee149befe0/kinaper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/652b9714-2ee2-48c1-a65c-87c60aa4f9f7/cuentos_de_ciencia_ficcion_de_robots.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdac0442-f029-467b-b96f-bd025e2f9925/44865641520.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/olympic_queen_mattress_sheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7ee76a3-7b7d-446b-88a5-526d90464522/39402271445.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3862b6e5-b47e-4f5f-a4c8-44a0c0185bd0/38482029382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a2d48bf-dcf9-4db2-8b19-71d81edfcd9f/63590100267.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/omnigraffle_bezier_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/338e57ea-3be8-434d-b330-746f60797519/27274277975.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7099 5140 bytes
SHA-256: 6943bfcdb7715ee4eff4362451097351a48032542a58004f544ab3e2a67b9e56
font_01_sfnt_off0000821d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821D 10792 bytes
SHA-256: de4de7cd5280142dcfc091baf9219e8de639084c7fb75caeac75527afb74b56e
font_02_sfnt_off0000a738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA738 16580 bytes
SHA-256: 9b0d38f509a31cc5021208a79b14d37f99e6b65101d3ccf366d14c6b37feacf7
font_03_sfnt_off0000be14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE14 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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