Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8d2c260ce4005d7…

MALICIOUS

PDF

38.7 KB Created: 2020-08-05 16:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 557862ba06897765836bae231cf46124 SHA-1: c536936c1659b740500b82a0fe439b8443200bdd SHA-256: a8d2c260ce4005d717f6e0f8b2abacdbe89dcc21f6bd4a73eee57d20f5731093
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify-hosted PDF files, which is indicative of a link farm. One of these links redirects to malicious infrastructure at 'ttraff.ru', suggesting a potential phishing or malware distribution attempt. The document body itself is largely unreadable binary data, but the presence of the malicious redirector is the primary indicator of compromise.

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=akreditasi+rumah+sakit+pokja+ppi+pdf In PDF document text
    • http://files.roygrayphotography.co.uk/uploads/1/3/0/8/130874050/gozak.pdfIn PDF document text
    • http://files.emmauswellbeingmatters.com/uploads/1/3/2/6/132680870/jikevopofabi_puvule_norodakufun.pdfIn PDF document text
    • http://files.haulksmaple.com/uploads/1/3/1/4/131454620/pebivowus.pdfIn PDF document text
    • http://files.orchardhillestate.com/uploads/1/3/0/7/130776519/d18d7f0011b9.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/1/0428/8564/4447/files/93207413941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5282/5767/files/autocad_2014_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/23238828372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2123/6381/files/fipuwufadiwedigajaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1514/2551/files/mpc_software_2._0_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6638/2749/files/dejukanowewibeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3446/7752/files/jipupoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7745/1428/files/jubujivepomosov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6670/4550/files/kewigalosukenesalabizoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/jitivelupuvegapaxi.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_off00005af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF0 5380 bytes
SHA-256: dce217917e79100872a56f3e0fa2f799478a8a452520675211742575595ee2d4
font_01_sfnt_off00006d16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D16 9700 bytes
SHA-256: fa294ac912c2d4b40a27de75d7e61a2d3646ef116b7677b9ddc5a05f4e4462bf

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