Malicious PDF — malware analysis report

Static analysis result for SHA-256 20cb65d9052b7cac…

MALICIOUS

PDF

41.5 KB Created: 2020-07-29 11:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a43d480686909fe77946c1c08d30c765 SHA-1: 34a83470466311b8b9ba991a1590bfd688bddc38 SHA-256: 20cb65d9052b7cac945088dd4ec2a7861666ffc9794d73b9d6fe2a1994024e88
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on 'cdn.shopify.com'. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, appears to be a lure related to a book title, suggesting a phishing or content-piracy-themed social engineering attack.

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=breve+historia+del+neoliberalismo+david+harvey+pdf+gratis In PDF document text
    • http://files.missionlenders.net/uploads/1/3/0/8/130874511/2441119.pdfIn PDF document text
    • http://files.nphsjrwolfpack.com/uploads/1/3/1/4/131483253/pageponiputi_gosalobire_vopepas_fatibo.pdfIn PDF document text
    • http://files.naturaleclecticism.com/uploads/1/3/1/4/131437243/pibedafinafup_xugabatuliguga_sogaxozodoka_warodiresu.pdfIn PDF document text
    • http://files.westerncanineacademy.ca/uploads/1/3/1/3/131383664/lobop.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/1/0428/9835/8432/files/vinujavezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/69035736197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5395/5742/files/gotavotosododutiwuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sitadekekogog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4950/0328/files/11238368799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/47792381836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3876/7266/files/borugimukejiwubep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9986/5756/files/dulizude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2791/files/50985501670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6869/4423/files/88842142679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/29109404745.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_off00005e09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E09 5592 bytes
SHA-256: 516ba2bd06391dde1062493b33e089e10e4997e669a12a29dbd4c41a7a196c16
font_01_sfnt_off000070e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E9 11444 bytes
SHA-256: 741e24646546514009cca19886977acc5b715219cc798fa2e73136f3b76453ac

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