Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b523ce2fa5a12d8…

MALICIOUS

PDF

43.0 KB Created: 2020-08-19 23:13:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1e5da40f607d5ff133b72d2543e8e7cf SHA-1: 92a575b90fb4555c145550e890b04a97b94c8165 SHA-256: 9b523ce2fa5a12d864ab664432a02db56ec9bb22ed87769d0be31e5a8723815b
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=cladogram+worksheet+worm+spider+ant+and+fly'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure the user to this redirector. The ML classifier strongly supports the malicious nature of this PDF.

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=cladogram+worksheet+worm+spider+ant+and+fly In PDF document text
    • http://files.katyhawkinsyoga.com/uploads/1/3/1/6/131606396/gisetevozewu.pdfIn PDF document text
    • http://ganowodok.hollywoodfashionmerchandise.com/uploads/1/3/2/6/132682124/wakumuvomadofumafife.pdfIn PDF document text
    • http://musisap.thegmleague.com/uploads/1/3/1/6/131637814/5186600.pdfIn PDF document text
    • http://mumame.innovate2educate.co/uploads/1/3/1/0/131070792/jefizebalilejimevu.pdfIn PDF document text
    • http://files.prosewizard.com/uploads/1/3/2/6/132696015/nukukorosi_lezoxupot_vilemizewa_livig.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/1/0428/9835/8432/files/tiwimuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2325/1094/files/944_angel_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/adding_and_subtracting_fractions_quiz_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1414/4675/files/57026541434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3495/9256/files/11600268964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5824/9380/files/43092325046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0392/6939/files/41567427682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71062637782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fesulemenakasisot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3630/2750/files/xfinity_norton_security.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_off00006849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6849 5620 bytes
SHA-256: 1bbf674c543b0eb3e72f2c74a3a9ec4ec3c7b50336eaa158b7e2497ea8efd581
font_01_sfnt_off00007b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B61 10452 bytes
SHA-256: c7af4d43e90840eaa2de81bc06ee4ecbb1ce493e6f8b9e33079b1b2854b44a6b

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