Malicious PDF — malware analysis report

Static analysis result for SHA-256 51487f20e53f6654…

MALICIOUS

PDF

46.5 KB Created: 2020-07-29 03:20:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7479acab57e31332362e998128b6a062 SHA-1: 648f3488f1d62f80777c6aee842b058aee4a6479 SHA-256: 51487f20e53f66543b0e142e4df5ad78ccd9eb5649ca276a24f652cc0b5c2dcb
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a likely attempt to lure users to malicious sites. The presence of numerous links, including one to 'ttraff.com', suggests a phishing or malware distribution 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=burlesque+performance+acrobatics In PDF document text
    • http://files.evadowdinternational.com/uploads/1/3/0/7/130738933/xoseburagaz.pdfIn PDF document text
    • http://files.lcpsociety.org/uploads/1/3/0/8/130814176/bogari-givonarudemabiw-fixumivasom.pdfIn PDF document text
    • http://files.datumfoundation.org.uk/uploads/1/3/0/8/130813409/7978996.pdfIn PDF document text
    • http://files.annsjewellerycreations.com/uploads/1/3/1/4/131437736/vuron.pdfIn PDF document text
    • http://files.miltonkeynesmanandvan.com/uploads/1/3/0/9/130969220/vebofo_zaditufatof_vumape.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/1/0432/6542/5570/files/gutegukugasapapatujif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/vewoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7401/0782/files/zuronamib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4066/8838/files/70248052432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/munuzajutajamarigeregutoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2658/6520/files/dimapareninejakurazejepup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7351/9269/files/gopanuzoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6671/0426/files/tonixegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0113/4747/files/jerabaseda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/27186932785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0600/8216/files/nixuvewinakelukivovavebax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/girabegalitavore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5286/7494/files/14469478548.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_off000077ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77ED 5356 bytes
SHA-256: 39388a3f5169ad185e6aa89b0c76d8844033b241bb38fdae5a2d573e6774f713
font_01_sfnt_off00008a0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0D 10124 bytes
SHA-256: c34705d7a8d6b949791858b84ab0449d24cdf8c9a890fa6356ac1686cccea11e

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