Malicious PDF — malware analysis report

Static analysis result for SHA-256 f68d42ad7806ad30…

MALICIOUS

PDF

42.7 KB Created: 2020-08-24 09:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf1073ed0e9db3d274564907161691ed SHA-1: 9a69e00bed76b49d94da0ac436dbeaa8d539a50c SHA-256: f68d42ad7806ad3005fbed8fffa3cadef982563ba227ea2aec9197ca1e9294fc
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body text and heuristics indicate a lure for free downloads, likely leading to malicious content. The ML classifier strongly supports the malicious verdict.

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/pify?keyword=java+projects+for+students+free In PDF document text
    • http://pejefa.achievewe.org/uploads/1/3/2/7/132740930/rogebapinatibo_bodebumirodi.pdfIn PDF document text
    • http://nojapos.jayrographics.com/uploads/1/3/0/7/130775982/mafesefotijurupokaj.pdfIn PDF document text
    • http://devedime.pesfusd.com/uploads/1/3/1/4/131482916/9602127.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/1/0437/8879/6065/files/matricom_g-_pad_bx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/67296243257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/vastu_shastra_books_in_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/peter_thiel_zero_to_one_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3032/3101/files/bbc_eastenders_tv_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gegexovikorojirokelaxedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/lunewirewigobazupopom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1585/6550/files/79974909467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/36702339457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6638/3768/files/pulmonary_hypertension_guidelines_esc.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_off0000608e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608E 5240 bytes
SHA-256: 572ce281061c28f4f713ee16c56284a2c8d38eea25933d08bf114591271db367
font_01_sfnt_off0000727c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x727C 13912 bytes
SHA-256: 7eb4d14154e667142d4afb48bd32a1fd2def1edc3646a7f74e6955ff919828c0

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