Malicious PDF — malware analysis report

Static analysis result for SHA-256 7be6b8998d50cb9a…

MALICIOUS

PDF

60.3 KB Created: 2020-08-24 05:41:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 38303a9503d73c6cd5270331b8e4923c SHA-1: 34c28809083da5d4a05d017f13231e86ad06273a SHA-256: 7be6b8998d50cb9afc10daa4b9281f1be79ad99d5c193da479b26e032187f4be
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to a redirector service, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The document body, though heavily obfuscated, contains a URL that points to the same redirector, suggesting an attempt to drive traffic to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=graphing+linear+equations+vocabulary+worksheet+pdf In PDF document text
    • http://files.deanzamoa.org/uploads/1/3/1/3/131398455/4580474.pdfIn PDF document text
    • http://files.delaneyswiftart.com/uploads/1/3/1/4/131453598/6df31149.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/1/0433/4023/4917/files/domine_las_aperturas_de_ajedrez_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7035/7653/files/60976323997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8720/0418/files/pre_order_traversal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/files/fivuzuvitir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6458/1525/files/fowonipipamijuxokefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0305/1175/files/arifureta_novela_ligera_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3141/2379/files/jevekigowekilukabidin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1512/6692/files/2939209069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/96818132292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/transport_through_cell_membrane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3100392900.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
🗂 Part of campaign: holisticimpactfoundation.org 5 samples

Related samples 6

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_off00009d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D26 6032 bytes
SHA-256: 59596cf273fad89ff0ce5000c6d7d36fbeeefaf2c0628c9e9fccc1c144a3fb28
font_01_sfnt_off0000b1bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1BB 16200 bytes
SHA-256: 3c92738146a4230bac48003eb6816419d67b4553ad70ae11618cbf0ed387772f

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