Malicious PDF — malware analysis report

Static analysis result for SHA-256 40da6a046bb916a6…

MALICIOUS

PDF

41.6 KB Created: 2020-08-12 04:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02b9ae2bc93e34790d4633885dd874bf SHA-1: 7e9acd7df45a711defbc1c0111d2aed35ad1b125 SHA-256: 40da6a046bb916a644068bd0fac27dd6c80ba87b1e6764c95b9f4b4273831982
194 Risk Score

Malware Insights

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

The PDF contains a high volume of embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the same malicious URL and a large list of other PDF links, suggesting a link farm or redirection scheme. The primary malicious URL is https://ttraff.cc/wb?keyword=contra%20la%20pared%20mexicanos%20primero%20pdf, which likely leads to further malicious content or phishing pages.

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=contra%20la%20pared%20mexicanos%20primero%20pdf In PDF document text
    • http://files.pemmensgolf.net/uploads/1/3/1/3/131379612/febokibilodirina.pdfIn PDF document text
    • http://files.stjohnsstafford.org/uploads/1/3/0/8/130814115/2512.pdfIn PDF document text
    • http://files.drlindaford.com.au/uploads/1/3/1/3/131379049/nobekuporoxiv-xupezewax-peten-kabil.pdfIn PDF document text
    • http://files.honeybunchbeeswax.com/uploads/1/3/1/4/131453843/0f6f260d708ce.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/1/0428/9367/2604/files/sofoderoremal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2036/7510/files/bateria_riesgo_psicosocial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6689/2191/files/81162436291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7233/1682/files/agile_software_development_principles_patterns_and_practices_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/61572090830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/puzemitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1986/0125/files/56936708967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5497/1557/files/gefenelipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9636/7511/files/how_to_shade_a_minecraft_skin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/libro_sobre_almas_gemelas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/ignatius_catholic_study_bible_old_testament.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6332/7385/files/kcet_2020_syllabus_download.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_off000061f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F9 5272 bytes
SHA-256: f831d321cdf4f5ce6c2950e0dbdc871acd0a4fe91b5e6c8244ccf02738328f20
font_01_sfnt_off000073d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D1 11080 bytes
SHA-256: 9ea485d437e24711e877dbf090a323a99ab9ea1e4ef3b4e01cdcd3d4e94abbc9

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