Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee4da432729be1b9…

MALICIOUS

PDF

47.1 KB Created: 2020-10-27 19:03:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: bfd49a7e6605e8b401ffb661b8dccb10 SHA-1: db17c96b0c946a9f5ae09e0fc50f1084e65e6308 SHA-256: ee4da432729be1b99d13a8038d959fabb66a3b803394374c5e0d5cc3e6ae9264
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.cc/123?keyword=stargate+rpg+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368503/normal_5f8e7f28b07c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369655/normal_5f91adf39a1ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f8704f0c79de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367903/normal_5f9373418f7ac.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/dinigugaxej/kogovekupova.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/84553544410.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/41869484546.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/vewelevabosarijidak.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/34117166311.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dde9ca55-997a-4d1f-ae04-68b261939043/zewosekuxamorojesolatawif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b5f0e0f-23a2-4215-a5fe-6f95036cc25a/meloxogofemutedidagiren.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fc96f58-d5ee-4a68-b49a-4febaa10ece5/videopad_5.03_registration_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fee3218a-4f57-4f13-89c6-bd7b3bb6cb91/fokezemuketez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3852/1544/files/9918195141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5238/2408/files/change_date_format_android_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2970/6910/files/slark_guide_dota_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac60ced0-c385-4b91-a9b9-f622291822ac/kabavisorakixomapomofep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a719555-10df-4035-ac51-3f7b7fe8d10f/pewogatelesa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c857e2a-4e76-4e39-9c69-28ba3bf156a3/zekinabejezopafunabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d60bce2a-4c71-471d-a97d-29f4e2cc4141/hp_photosmart_3210_driver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5305e62a-9989-404b-8aa2-328567c87bbe/wuluvutaxifomu.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_off000079c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79C2 5156 bytes
SHA-256: d090c63193366b9b8ee07f0664de8abb82feabdfe4ea69955fad581441497916
font_01_sfnt_off00008b53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B53 10400 bytes
SHA-256: c5e67451e26264058b009d40470c42ab84868ba97538453e37bc175f7b8977d5

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