Malicious PDF — malware analysis report

Static analysis result for SHA-256 80c764c9ad6dd115…

MALICIOUS

PDF

41.1 KB Created: 2020-08-14 05:30:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76b2e47d88e2b64e87985e15c2ce9de5 SHA-1: 69514f6d9f99f7b2215e726dd61c29f1920f1e36 SHA-256: 80c764c9ad6dd11542564f795911675fe7b3f7ea18bd6ea90d2d42d7317843fe
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 and benign-looking file names, suggesting a lure for users to download potentially harmful content. The ML classifier also strongly indicated maliciousness.

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=synonyms+worksheets+for+6th+graders In PDF document text
    • http://files.outbackgreenhouse.com/uploads/1/3/1/4/131484133/583188.pdfIn PDF document text
    • http://files.andressalazar505.com/uploads/1/3/2/6/132681164/f0f77.pdfIn PDF document text
    • http://files.michigancelebraterecovery.com/uploads/1/3/2/6/132696122/fd437.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/1/0437/3122/2677/files/counseling_skills_for_speech_language_pathologists_and_audiologists_2nd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7124/2391/files/strategic_management_calicut_university.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7365/0334/files/dieta_astringente_fisterra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6090/4615/files/zapakamalutetidajojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1260/1502/files/difference_between_cumulative_distribution_function_and.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5870/8136/files/henri_cartier_bresson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1653/4685/files/pofiluvoninozam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/10586729082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/6003/7541/files/nutritional_value_of_mango_fruit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/20693825190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ropuxikasafomudixaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0313/9480/files/725510430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4642/8059/files/91297142094.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 2

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_off00006000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6000 5804 bytes
SHA-256: 0001e8c27870d8d4e6d6c467a2cdb0d4195fc5d8f3b3d0f186468e598ddd4495
font_01_sfnt_off000073a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A1 10540 bytes
SHA-256: 5484874fa0ae22f35c50246e22333b0107e87a3391d3888fbe0d284b1c0b7238

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