Malicious PDF — malware analysis report

Static analysis result for SHA-256 1600503b99c237de…

MALICIOUS

PDF

46.4 KB Created: 2020-08-04 09:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6598b274f3dbfae747030372ff3ffdc9 SHA-1: fb36bf165ba5dd0a5ea62bcd3a35ad9a4442b9d9 SHA-256: 1600503b99c237dec0a3c641576533b79033f7d088f8af2fbd26e289b9c2f564
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL, suggesting a phishing or scam attempt to trick users into downloading potentially harmful content. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic.

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.cc/pify?keyword=biogas+production+procedure+pdf In PDF document text
    • http://files.almamusicandartsfest.org/uploads/1/3/1/0/131069789/710708.pdfIn PDF document text
    • http://files.otterponds.ca/uploads/1/3/0/7/130776058/gugipuvudut.pdfIn PDF document text
    • http://files.alisonrcheah.com/uploads/1/3/2/6/132696249/lugoku_vamefakiweked.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/1/0427/4746/1788/files/64904356554.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/bibagemize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2865/1938/files/2005_polaris_sportsman_500_ho.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0436/1895/files/5719627529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/arduino_cnc_shield_v3_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2936/3878/files/11646517173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0501/7238/files/14577823047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6060/9692/files/15367526412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4431/5029/files/79330449318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/xulunanemojosex.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 5

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_off00007797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7797 5340 bytes
SHA-256: da0a78817b0a23340f6588b90198b70349f966069306d014b81e84c588fce34a
font_01_sfnt_off000089db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89DB 10284 bytes
SHA-256: 2bec09c36718057facf0307360e7800022e6a4f25adcec9d2b60dd14349f59e2

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