Malicious PDF — malware analysis report

Static analysis result for SHA-256 da302e7724570880…

MALICIOUS

PDF

35.0 KB Created: 2020-08-03 14:15:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 103432a75591fd8cf560a6d18c4baa40 SHA-1: 85b93c90b0feae439a51a70d5dfe0b78da7d7f30 SHA-256: da302e77245708804f2aad32a826e450386d812bfc7ff680d6a525fcf4c19e95
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, with the primary redirector URL being https://ttraff.com/pify?keyword=tabela+brasileiro+serie+a+2020+pdf. This indicates a link farm or redirection attack designed to lead users to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=tabela+brasileiro+serie+a+2020+pdf In PDF document text
    • http://files.badgirls.hu/uploads/1/3/1/4/131437604/gizisuwix.pdfIn PDF document text
    • http://files.redtreefarmstead.com/uploads/1/3/0/8/130874523/zudeles.pdfIn PDF document text
    • http://jekive.idagirls.com/uploads/1/3/0/7/130775448/zufaropid.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/1/0431/8802/7556/files/18660314824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/86904082297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/pip_install_user.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/lincoln_weld_pak_3200hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/41101017250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xirapekewovefosisukepeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/36288349459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/16287870539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/jaxarun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/jebimogejilofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/sabijewalodoninefuve.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_off000047f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47F5 5400 bytes
SHA-256: 41b256af5e418d21ade61b8cd523972255d064bf5313c9883d6f6fd3a77ca450
font_01_sfnt_off00005a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A53 11292 bytes
SHA-256: 6cbab7770c1e9ee33581bf9901ff8f5f43e1f54a09ec5707ded1faa0a99a32d4

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