Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa80dfb0437a3feb…

MALICIOUS

PDF

45.6 KB Created: 2020-10-10 12:24:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: bab3da5d9a2ff8c8f4c85660b3714cdc SHA-1: 8cbf4cee8c6807cad0e751be26cba173284a7c20 SHA-256: aa80dfb0437a3feb561a8ffe4c9138a8ef2fa5912f0070c34368dd895dc3d3e9
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=maternal+child+nursing+mckinney+test In PDF document text
    • http://kivomig.downtownguestsuites.com/uploads/1/3/0/7/130776246/bivegaziwigo.pdfIn PDF document text
    • http://babezu.shopunitzbyjaz.com/uploads/1/3/1/4/131454436/bufevixuvebiwin_retovatilefovel_rikimigafek.pdfIn PDF document text
    • http://files.reyal.co.uk/uploads/1/3/2/8/132814136/kilibujiwivexide.pdfIn PDF document text
    • http://files.smartacstore.com/uploads/1/3/1/1/131164386/towafumawevojom-xasizigu.pdfIn PDF document text
    • https://site-1042603.mozfiles.com/files/1042603/91102597987.pdfIn PDF document text
    • https://site-1043887.mozfiles.com/files/1043887/tapedopupevuwiwoxuxe.pdfIn PDF document text
    • https://site-1039646.mozfiles.com/files/1039646/77026860987.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/1/0477/3937/1676/files/73005368175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8362/3325/files/fill_in_the_blank_personal_financial_statement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3242/0250/files/tesefivedejapaxetidig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7842/7831/files/diatomaceous_earth_spiders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6152/4118/files/10572980120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3025/6536/files/sb6121_firmware_upgrade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3574/5186/files/tipos_de_rockeiros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6121/4877/files/east_gaston_high_school_supply_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4630/4416/files/pleasant_valley_iowa_homes_for_sale.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_off00007458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7458 5524 bytes
SHA-256: 89116e808ce1275ea3a62a17300c5404ab439caf592077d24e740921d2c97999
font_01_sfnt_off000086f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F2 10008 bytes
SHA-256: fd58653c698eee4793be191c7d118b9bed917701a4ce9882960dcf36979f9f2b

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