Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed53f9eb0136dd3…

MALICIOUS

PDF

49.1 KB Created: 2020-10-29 06:35:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-19
MD5: 8387d2767417a448f653c19361b3bf5d SHA-1: 385386e31d66cc4fdc0942cb9541e7581403f36e SHA-256: 8ed53f9eb0136dd3a2c924879a548209731848f808fc6aeaade4d7199eb39436
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.me/123?keyword=tracing+light+box+near+me In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393044/normal_5f961b5b2581f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366646/normal_5f924b5d84b7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366358/normal_5f936c5bb6001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368481/normal_5f9202442e5da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368763/normal_5f89d3af50c76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380887/normal_5f94a2e2a05b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377935/normal_5f9340f33ebf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f89a8fca7c52.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/43ab08fe-7d85-4a34-bfe2-5c17235a1f51/14285688795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07975df1-254d-4292-8f39-1bf2806a967a/elite_galaxy_map_icons.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0220a5ba-e747-4c89-9671-693a14c48ea8/32570961942.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/839b6b98-8a60-425b-8783-d192f3a5ccee/62472250641.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2b2b957-fec0-484c-a181-184f64b01ad4/nilapadurutufezagepabazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6b83889-237a-4f76-a4c0-8cf51f712a36/39084903792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/0397/8143/files/higiene_personal_nios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1673/0799/files/solar_energy_conversion.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B61 5192 bytes
SHA-256: b46d31cbb34f93b78ea5d91b94a78fd65e684d98107f301ebac8d2e2113930f6
font_01_sfnt_off00007ce0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE0 11084 bytes
SHA-256: d788cda8d31e3d9a909672f6e4d3d1c1a4a7d7a4a1191c3dcc500ac1f3109729
font_02_sfnt_off0000a272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA272 16092 bytes
SHA-256: 9dafc8c6c2044359462da21d531ebddb9f9aebee88f97414d95c5c82fe20cea5

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