Malicious PDF — malware analysis report

Static analysis result for SHA-256 4644fb55a795dc40…

MALICIOUS

PDF

124.4 KB Created: 2020-08-11 06:57:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69d25695f6aff5267db0b821eb19fbff SHA-1: ee86b0b33d3faa6504777888e9e820b070cd3706 SHA-256: 4644fb55a795dc408d11c4a4b68c2c5d37e1bef5e88ea343c8e37cc574bf7b60
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. This suggests the primary purpose is to redirect the user to a malicious site. The PDF also contains a large number of external links, indicating a potential link farm or SEO poisoning attempt to drive traffic to malicious 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/pify?keyword=alchymista+pdf+ke+sta%25C5%25BEen%25C3%25AD+zdarma In PDF document text
    • http://files.designsbybrunner.com/uploads/1/3/1/3/131398504/7e4eedec7.pdfIn PDF document text
    • http://pevusub.savejonesstateforest.com/uploads/1/3/1/3/131379706/gagoremosutiturogiv.pdfIn PDF document text
    • http://files.contigodevelopment.com/uploads/1/3/2/3/132303219/resowewaxaronivipid.pdfIn PDF document text
    • http://files.weatherstrider.com/uploads/1/3/2/6/132695472/3631250.pdfIn PDF document text
    • http://files.sdinspectionsllc.com/uploads/1/3/1/8/131856877/tidiguxufulezomarop.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/1/0434/3300/1126/files/gugekoguforevuxigefotifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6224/7075/files/zunonigeroke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9829/1870/files/objective_agronomy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/xopaxiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2363/4330/files/general_chemistry_exam_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1954/1416/files/21201523935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2824/9767/files/electrical_engineering_nptel_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9821/0461/files/miloganukixeroxataneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9262/2998/files/54957278580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/30425941185.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 6

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_off0001a83b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A83B 5732 bytes
SHA-256: ebf42a7f02d795931d7e4740661f1cf215f959ebe137c8d1376e1cffc23a8e2f
font_01_sfnt_off0001bb94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BB94 13072 bytes
SHA-256: 0fbb0ddb48de00f3f8eeea27ae35c62bba440d5fee8f3f65559f5ce708513541

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