Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b212b41b65b0dca…

MALICIOUS

PDF

65.8 KB Created: 2020-08-18 14:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b6587459d197cce5f1a79dccb697465 SHA-1: 87242366c6435d9062d61fe40212f5a12ab73b7d SHA-256: 4b212b41b65b0dca1269349f92568d0d0b26663373cc121eb9373577f2e92251
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains the same URL and a keyword suggesting a lure. The presence of a PDF link farm heuristic indicates a large number of outbound links, likely for SEO poisoning or to distribute 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.com/pify?keyword=box+office+report+2018+malayalam In PDF document text
    • http://bikosi.johnirwinsonlinebusiness.com/uploads/1/3/2/6/132683051/8227960.pdfIn PDF document text
    • http://files.jamincarson.com/uploads/1/3/1/6/131637763/187329.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/1/0434/1504/4252/files/tuzuvimevapobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/vojopabinobiretataza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6191/9396/files/rafewijuxul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2027/1272/files/4802686823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1895/2610/files/wedijigazakoxekono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fupibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5511/files/jodenowemewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/gukeren.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5056/4773/files/32382420161.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_off0000c3f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3F4 5720 bytes
SHA-256: acbbf51acd0c99388014d5e7cc05c260c449d979704f35d10625d2a07d4b786b
font_01_sfnt_off0000d771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD771 10156 bytes
SHA-256: b54918b8f77da4be089887a9c4f12e73879ff66b30a7803f8be65305f0a51129

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