Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd49e6cc96fd3427…

MALICIOUS

PDF

44.8 KB Created: 2020-08-09 06:14:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3c15a5ac828046b065ba060a931e8ad1 SHA-1: 672109b59013228a83555c8f65984e08410919f5 SHA-256: dd49e6cc96fd34273ef9e0fd52871c21b043a9992f613fd88256bf40d1c52d04
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'cerebellum anatomy and function pdf'. The primary malicious IOC is the redirector URL, which likely leads to further 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.cc/pify?keyword=cerebellum+anatomy+and+function+pdf In PDF document text
    • http://files.ckieffer.com/uploads/1/3/2/7/132710763/8d12ef4eaab78.pdfIn PDF document text
    • http://files.brookfieldbackstory.com/uploads/1/3/2/8/132815791/fowinefajosobevebet.pdfIn PDF document text
    • http://files.thebellevilletelescope.com/uploads/1/3/0/8/130874668/3468385.pdfIn PDF document text
    • http://files.pondviewmanor.net/uploads/1/3/1/3/131383838/retunidakuvagitin.pdfIn PDF document text
    • http://files.davidabrehart.co.uk/uploads/1/3/0/7/130775678/3768185.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/1/0440/6925/7366/files/58296990319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3174/0066/files/dukiviwejuzokuvilegux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1764/9819/files/ruriregiwesejasames.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/parental_influence_on_academic_performance_of_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2496/2968/files/dagirazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1102/9666/files/69087038324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8439/8236/files/vejapibibudix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/bewat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2574/4547/files/66607674405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6925/1487/files/81818488896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0711/files/jimepatusimotev.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6405 5268 bytes
SHA-256: 4350fe7e4f97a9c4f8aca6fd3d71359e1c6a466dfec2c3d0597c0736a1bc1d71
font_01_sfnt_off000075da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75DA 10044 bytes
SHA-256: c43f2442b2478aeca48db0bf24c6cf94af1349790d54d07f9726119f3f0357cf
font_02_sfnt_off000097fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97FC 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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