Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef9b507603234872…

MALICIOUS

PDF

41.4 KB Created: 2020-08-11 02:59:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc695eb72c8e42373834d356992f6bcd SHA-1: 9b5d42d00535132adcd967d32dfacbe26e7cd8db SHA-256: ef9b50760323487219efff8c3996e773409fa9d3f9ed2796bce9aa0bc59689cf
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is ttraff.cc, which is known for redirecting to malicious content. While the document body contains garbled text, the presence of numerous embedded URLs, including the malicious one, strongly indicates a malicious intent to redirect the user.

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/wb?keyword=competitive%20advantage%20of%20nations%20pdf In PDF document text
    • http://files.rootedaltarministries.org/uploads/1/3/1/4/131438453/9505102.pdfIn PDF document text
    • http://minodat.quekhin.net/uploads/1/3/1/3/131398101/2889736.pdfIn PDF document text
    • http://timomuzal.sustainablemaize.com/uploads/1/3/1/4/131407005/sejukutunutigu-ragadoxa.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/1/0436/9963/4330/files/magogimefemutujajobupedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6125/5073/files/1365020261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0392/7973/files/jezarubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9599/9129/files/rexawuxivajerojevos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6635/0998/files/49393318990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5382/4677/files/vudumesalibitusajaxojoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3922/7047/files/17836518019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3703/5429/files/digital_microfluidic_biochips.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/8621583381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/kazaromobunawemeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0046/2503/files/lm2575t_adj_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/tivosebozufaxuvulo.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 7

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_off00006534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6534 5196 bytes
SHA-256: 61588dce64926fd6c4af71754383ca1c8e7e0ad9c8e5bd4662b271b0c36a6626
font_01_sfnt_off000076da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76DA 9952 bytes
SHA-256: 095f28478dcbd35eaa7e57b66a71a522d5e7ee109fc647d99771a54fcf9972e3

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