Malicious PDF — malware analysis report

Static analysis result for SHA-256 0850d9454e134be2…

MALICIOUS

PDF

47.1 KB Created: 2020-08-12 20:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b0eae5c50f3c0ee98fcabe552b280054 SHA-1: e5b208912fb855d6f2fcfc7d7d9c56a6e84b893c SHA-256: 0850d9454e134be2fa2d1e8ca99a25399168711a53d00e923252b8346eb47a2e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains numerous links designed to appear as legitimate downloads, but they redirect to malicious infrastructure. The primary redirector URL is https://ttraff.cc/pify?keyword=chemistry+laboratory+equipment+pdf, which is flagged as malicious. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to trick users into downloading further 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.cc/pify?keyword=chemistry+laboratory+equipment+pdf In PDF document text
    • http://files.themudlakeproject.ca/uploads/1/3/1/4/131407665/2735271.pdfIn PDF document text
    • http://paripijup.metranengineering.com/uploads/1/3/1/3/131383657/6b5b784198.pdfIn PDF document text
    • http://files.pro-help.co.uk/uploads/1/3/1/3/131380343/vupin.pdfIn PDF document text
    • http://jalelafab.hollyterrens.com/uploads/1/3/0/8/130874038/wodevemise.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/1/0427/6980/9564/files/35437330185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3275/5875/files/another_word_for_starting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1586/2434/files/support_vector_machine_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/nupotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5482/4598/files/metal_casting_process_nptel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/30753668196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/veguwabutenuzom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/tunaxabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3841/4760/files/21044673346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/sipuwotewurawuten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/27618769802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4809/8209/files/16375016070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9973/2635/files/litabagonojorinenovev.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_off0000796e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x796E 5552 bytes
SHA-256: 3fa12c94499220d13c0a67213a15cb5b739a2fb7dd7f0cbb0fd41a82bd7976a2
font_01_sfnt_off00008c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C18 10192 bytes
SHA-256: ae310f428f02e7f1544d1c8459b6179ec82744f83711c4eff15bf4bac50fe81a

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