Malicious PDF — malware analysis report

Static analysis result for SHA-256 04082df09c0cee72…

MALICIOUS

PDF

40.2 KB Created: 2020-08-23 13:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b0060b77437b81790e659a10ac498a96 SHA-1: fd18afde6d3b41e3bf58956550d869a8ee3c2560 SHA-256: 04082df09c0cee72f4ea69b165a2fa8b0559b43e9f72497006c2cd9c4fba23ae
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=analytical+questions+and+answers+pdf'. This suggests the document is designed to lure users to malicious infrastructure, likely for phishing or to download further malicious content. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=analytical+questions+and+answers+pdf In PDF document text
    • http://files.tasteoftherunway.com/uploads/1/3/1/6/131606854/3314657.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/1/0431/0804/0853/files/65220880766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9373/7118/files/developing_critical_and_creative_thinking_skills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/notevumekorasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6747/4087/files/26534668226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/17974343769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7784/5671/files/sonosubipiver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0522/2822/files/72088555597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3878/4158/files/50986904966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0323/9835/files/varagexemipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6756/3429/files/12135535648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/jizukukazisi.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 4

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_off00006075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6075 5456 bytes
SHA-256: 6e496e833166faa219b6d47d41ed94f0e521a80f57ee5c8a3189448c830ca4c4
font_01_sfnt_off00007325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7325 9672 bytes
SHA-256: ed37db0a1785d2ca1d147fb72a22f1650eaf0a2b547c67530d5591a8db38032a

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