Malicious PDF — malware analysis report

Static analysis result for SHA-256 647466d2370ab836…

MALICIOUS

PDF

40.1 KB Created: 2020-09-11 16:38:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03da8894738e2acdd7d0b3149679a42b SHA-1: 1c8f93d036fb7186b838adc03710abf4e4a8d63b SHA-256: 647466d2370ab83642b671ae3f285c4e4c1118dd21c75b99c984a033dde19244
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with several pointing to known malicious redirector infrastructure like 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that matches the redirector. The presence of a link farm heuristic further indicates a malicious intent to distribute links to potentially harmful content.

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/wix?keyword=no+uniforme+significado In PDF document text
    • http://files.jenniferbiedermannjewelry.com/uploads/1/3/1/8/131871633/xaramudus.pdfIn PDF document text
    • http://files.niclasolson.com/uploads/1/3/1/4/131406149/fatilakexavebuwu.pdfIn PDF document text
    • http://gixuf.croxleygreenhistory.co.uk/uploads/1/3/1/4/131483068/6949029.pdfIn PDF document text
    • http://files.brianneforwv.com/uploads/1/3/2/7/132740586/garezo.pdfIn PDF document text
    • http://files.annamstorti.com/uploads/1/3/0/8/130874019/lokisun-penaperexuvemi-kenazoza-janewinu.pdfIn PDF document text
    • http://dapajuxi.northwaystudents.com/uploads/1/3/2/6/132695643/4e175.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/c0fca2_dcf8411f80c4415da8951086bcc80be5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b65acf_264e8df29e48496daa21955ea386a2a2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6c98bc_9cd761ffbeb94a609e9f41f04f87ef91.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/717a42_1a9ec4a7d6bb49e8a291d7bd9153f64b.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1158/0577/files/cisco_glbp_configuration_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5111/3887/files/bsc_agriculture_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/8119/5680/files/62129436084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3695/8106/files/semudab.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_off00005e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E33 5280 bytes
SHA-256: 904f3acfca8668d34b0d6e7cfc1d54660670a95295c400107d93d71ed9a549cf
font_01_sfnt_off00007019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7019 10492 bytes
SHA-256: 53bc4abdc2a1eaef46d1a9249c8a5a338844b6e7375f01299408b79119f95b32

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