Malicious PDF — malware analysis report

Static analysis result for SHA-256 fec80db5ba33150b…

MALICIOUS

PDF

41.7 KB Created: 2020-10-16 11:41:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: cd5ac0be9fee5fcca82a853a3ca27026 SHA-1: e9e3f239e68342b35e6fbe119dc096496c1afa17 SHA-256: fec80db5ba33150b38f8a6c8528ac7d3fa916ff3a4f9b003ad79a1ce6f1e77b6
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://ggtraff.ru/123?keyword=omega+6+fatty+acids+pdf In PDF document text
    • https://xizirogubo.weebly.com/uploads/1/3/0/7/130776043/72c10c3f37f873.pdfIn PDF document text
    • https://tajurasexir.weebly.com/uploads/1/3/1/6/131606020/53b120cf7ca63ad.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/7304884.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nimemoroligamaj-tafixidupara.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0691/3435/files/the_bhagavad_gita_juan_mascaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3441/8586/files/salem_witch_trials_video_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3393/1171/files/real_steel_wrb_game_download_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1931/3569/files/sarah_lafon_gore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f337a370-8f15-4661-b7c4-2882de6fc08c/kixezipobemirajedupebej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfc6e54e-a9df-42f5-82d7-e3c3ac144a4f/66303107125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9315/0875/files/pvp_smiter_guide_diablo_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/7276/6119/files/harlem_to_be_answered_by_langston_hughes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acd63b8e-9d43-4318-a29e-2cd79e499f90/vobabemegurapiwipi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf17569e-bfd2-4c61-89c7-3757e4f84b3a/ragarobatorunaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4da8b9ca-12e9-4399-b35e-ef1bb34ee77a/sogigevamovobafajer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54b7493c-6599-47a7-bf2c-9935ce372718/39490226084.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DF 5632 bytes
SHA-256: 3ed36d2d88273668b9eace4854f9de041f985c93e573203e3d293ee2c3278350
font_01_sfnt_off00007905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7905 9736 bytes
SHA-256: 36a460709f71bf32d22b219d46b67ff2e50b4b8d1464e7fc3301db0f91ae0b05

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