Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d3646e6c4dc9613…

MALICIOUS

PDF

163.4 KB Created: 2020-08-07 01:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 801098a634df5e8b2d378e9389cebee4 SHA-1: e85c516489842d22c359e2d2dbe884d46a62a380 SHA-256: 0d3646e6c4dc9613fefaad165dda15ddd5382662ed144b18412a4edee6f557a2
134 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics, suggesting the primary purpose is to lure users to this malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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=introduction+to+medical+virology+pdf In PDF document text
    • http://raruje.chriscruzboone.com/uploads/1/3/1/0/131070374/6774982.pdfIn PDF document text
    • http://files.yenzfacepainting.com/uploads/1/3/1/3/131398221/a794b1c0a85.pdfIn PDF document text
    • http://files.abrasax.info/uploads/1/3/0/7/130776485/zukavujejonovod.pdfIn PDF document text
    • http://files.made-by-nature.be/uploads/1/3/1/0/131070434/034cd7e84fcdaf7.pdfIn PDF document text
    • http://files.mansoonkim.com/uploads/1/3/1/3/131379320/3726697.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6535/1071/files/97021950595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3301/0082/files/dosogaxutedizikago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2743/9526/files/surujopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4101/3415/files/7081301487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5458/0391/files/fajakekazekobatemaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5721/7693/files/gedibutibapoloda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/sefibozim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1955/9335/files/94482878871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/zufodusavezibedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5824/7320/files/39701949144.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000231ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x231AE 5280 bytes
SHA-256: 823dd6485b467a301f73ab2a1f97e221c634203a502fb9a7aa46c39eeab9898f
font_01_sfnt_off00024391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24391 14752 bytes
SHA-256: ba301933faaabd33f0a0ee43622fc25d38a2ad5161060c2a3326902a1a4c47bd
font_02_sfnt_off000271e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x271E9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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