Malicious PDF — malware analysis report

Static analysis result for SHA-256 63fa8056d548f676…

MALICIOUS

PDF

44.0 KB Created: 2020-08-09 19:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7781b671e4c191c266d762adfedcf3c7 SHA-1: 5ed4e53c5f352ce9173660f8326b016230ccf8df SHA-256: 63fa8056d548f676da2e5cf6c5ffca62124709246d94240eb4ea66f51f3386db
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains text and URLs that align with SEO-based lures, suggesting an attempt to trick users into clicking malicious links. The ML classifier strongly indicates maliciousness, supporting the conclusion that this PDF is part of a malicious campaign.

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=balance+general+de+una+empresa+pdf In PDF document text
    • http://lewesuvi.sonofatabey.com/uploads/1/3/0/7/130775162/274cec37e4.pdfIn PDF document text
    • http://files.audio4n6.com/uploads/1/3/1/3/131378942/31ce8.pdfIn PDF document text
    • http://files.socalbiblestudy.com/uploads/1/3/1/4/131438423/617076ac42303c.pdfIn PDF document text
    • http://foseweme.environmentalspillcontrolllc.com/uploads/1/3/1/4/131482995/fesotesofixum.pdfIn PDF document text
    • http://files.wealthynationinstitute.com/uploads/1/3/0/8/130874678/ramifunujubibamase.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/1/0428/6775/3116/files/xiruvajorug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5165/5076/files/febesajodizeroxirefafove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3199/3242/files/xipomow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/damekazivadebolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/fosifepiwovusiza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9536/7585/files/83938403364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/who_s_afraid_of_virginia_woolf_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8624/0162/files/vexefipizukomizapobeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3452/5352/files/88257380854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1705/1039/files/application_of_ampere_s_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7044/5975/files/philips_voice_tracer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/global_paint_and_coatings_industry_market_analysis_report.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_off00006bd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD8 5524 bytes
SHA-256: eb395a8daa688e0ce7842c403f9fca562cd7a35eccd0e4abd4974e9a5e1f165e
font_01_sfnt_off00007e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8C 10756 bytes
SHA-256: f520bc821d6eaec50af82be16fc591bae4835c8f6521c42b1ea85b4d7502ec91

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