Malicious PDF — malware analysis report

Static analysis result for SHA-256 183dafe69891d44d…

MALICIOUS

PDF

60.1 KB Created: 2020-07-30 18:13:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b67b45912f10487164b03a86e34a613a SHA-1: 1b863021ba576be863c88ec258a6c58f4217072e SHA-256: 183dafe69891d44d2e4bba92b26cc2c014bcb9ac1fb53aa2d7aaebc9acb50e08
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate academic resources, but it redirects to a malicious URL (ttraff.cc). This technique is commonly used in phishing campaigns to trick users into downloading malware. The ML classifier strongly indicates maliciousness, and the presence of multiple redirector links supports this assessment.

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=nips+2020+accepted+papers+pdf In PDF document text
    • http://files.bozhenaevanstherapy.com/uploads/1/3/1/1/131163780/303727.pdfIn PDF document text
    • http://files.vancouver604.ca/uploads/1/3/0/7/130740249/kelufozizilage-jorolujibevaken-digujezoje-kojotekikonep.pdfIn PDF document text
    • http://files.pixiedustmagictravel.com/uploads/1/3/2/6/132681440/7f5119fab91.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/1/0438/7491/0376/files/99549054025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/jojuwowupijitagina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3417/1800/files/womomolamelubaserobuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/4682342232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5059/0627/files/junafutorikabikafajazet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27392185694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5106/4228/files/62470444712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1721/3851/files/muriwurim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/22752384374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3224/7457/files/soporagixalari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0232/1307/files/85944396035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2639/0946/files/firezunimekufuvudif.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 2

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_off0000a1ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1EA 4932 bytes
SHA-256: a9862c57a6e794d43429cb9f42cdd9e5a04a1764bbbf422be5d4d554463abbe5
font_01_sfnt_off0000b2bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2BB 15668 bytes
SHA-256: b09cbe3f3ce6de6006aa358ffe1fb41e50696d5d6c5b6aa039be5598cb3d4138

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