Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd9681f893061ae0…

MALICIOUS

PDF

45.1 KB Created: 2020-08-23 17:01:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 46db6a024bd688e87542908fa5b05bb1 SHA-1: 92b0470f6c07562e3a518370a0bf1cb3e83c39e0 SHA-256: fd9681f893061ae01ecb380b3ff25d621b7e3a8f197d374b937db8d856c5825e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution.

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=script+fonts+free++for+mac In PDF document text
    • http://tazobosez.childrensauthorsnetwork.com/uploads/1/3/0/7/130739789/5806730.pdfIn PDF document text
    • http://files.franciscreekranch.com/uploads/1/3/1/6/131606360/rimeta.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/1/0457/4121/1804/files/cube_roots_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4020/9056/files/wodamedose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/cooking_training_rs3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/8921/8984/files/ralupegatejita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/hunter_x_hunter_episode_135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1722/3840/files/54112443137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fenajowogotuxukat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1738/7682/files/26776940984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5816/5925/files/46234927794.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_off000072c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C9 5232 bytes
SHA-256: 552b280dc132e90204cdf9dfb0df524c80ffbef1bb20077e411d9d883ac38515
font_01_sfnt_off00008475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8475 10292 bytes
SHA-256: 4287e9153ba034fa0f99c4fb65bf1f2cd73e737743df187c1f89b0050cfd5d36

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