Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bd3c1e96005f1c7…

MALICIOUS

PDF

55.9 KB Created: 2020-08-07 18:24:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ed939024ac5209a6ac25506f297f5bf SHA-1: 921c9fe4d818db679eac8d56dee7b93b25ffc91f SHA-256: 5bd3c1e96005f1c73adc1b542065d70bc790f414a9c4f1e22e6a38939d4d5a3b
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. The document body, though partially corrupted, includes the same malicious URL, suggesting an attempt to trick users into downloading further 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.com/pify?keyword=list+of+important+days+in+2020+pdf In PDF document text
    • http://files.abcformepreschool.com/uploads/1/3/1/3/131380032/bd114.pdfIn PDF document text
    • http://files.cumministries.com/uploads/1/3/1/4/131437308/4479507.pdfIn PDF document text
    • http://files.saborlatinotacuari.com/uploads/1/3/2/6/132695329/kikizazerepekesomak.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/1/0433/6300/8664/files/65553652731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8206/3777/files/muteremametopomiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2569/4883/files/soal_bilangan_bulat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6123/8168/files/wujinelatidup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9305/6933/files/tukig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5129/3603/files/hades_kingdom_hearts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8520/1561/files/26747642125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/rofelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/vazenafonalatafadasadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4547/6762/files/40626702900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1345/3470/files/circular_economy_package.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/femowitakadipidulemobosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2613/6731/files/27262347123.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 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_off00009b91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B91 5472 bytes
SHA-256: d454c4952bde9e3401992f3db67f3e9d62bc6c30c99904659720c51d040ce4c4
font_01_sfnt_off0000ae20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE20 10652 bytes
SHA-256: c58d91ab81f9acabe3430ebbdc200b1a093cd5a09d30885bd8d4ae1503937c94

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