Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a37e447a5d0bc5…

MALICIOUS

PDF

49.6 KB Created: 2020-10-12 00:22:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 684b26789c1fa1ae5cca426eed271d5a SHA-1: b75e79db879d7891afc6eb58d746ed867574a7fb SHA-256: 18a37e447a5d0bc5f7cab9c46bb2b54c1200dabcf8f8586d0d8e8aa85347979c
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/strik?keyword=mta+san+andreas+1.5+sa%25C4%259Flam+indir In PDF document text
    • http://files.lisasearsart.com/uploads/1/3/0/7/130738780/gejazokinezovuguges.pdfIn PDF document text
    • http://getosa.wekeepyoumotivated.com/uploads/1/3/0/7/130739287/6037708.pdfIn PDF document text
    • http://files.gopml.com/uploads/1/3/2/6/132695467/pufomotitor_fazazugudi_zejonotoniw_dizewodadi.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007e74.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007e74.bin)
    • https://uploads.strikinglycdn.com/files/232e4d12-85a0-4bf7-875f-e89f2866dfa2/53086873840.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c9129cc-029e-42b8-b749-84ab82d30047/vufunasimixogebufodozodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/1428/3176/files/igf_1lr3_dosage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6658/3206/files/acme_fireworks_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7865/4883/files/5971917887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/4850/4991/files/dodge_ram_rumble_bee_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6744/7714/files/skidmore_registrar_banner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de3dc646-8afd-483d-9efa-8dfd8750c8b9/9216381974.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b597ee28-bb41-44d2-a388-5abffe15ad82/zabadilupedaxakumifenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef1acf3b-3a5c-474c-a579-586ec93ed9ea/fetuwivasevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/093a6ba3-b712-46e2-a404-49e6c4990fe3/pitigagutuxukal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb65f138-6da5-4b00-bfc4-7b25e8c5b4b1/89559150339.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 extracted file (font_00_sfnt_off00007e74.bin)

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_off00007e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E74 5416 bytes
SHA-256: a4b07bc68c18baf42a508239fc5f82aa70e09b304d667368cbb36fcff06a0d6a
font_01_sfnt_off000090d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D5 12420 bytes
SHA-256: 28c2cb97830e1ae03de50c637f08cd35f84564d4decc7fa3848a7409ec46d800

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