Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce4618e9679cdd2e…

MALICIOUS

PDF

35.5 KB Created: 2020-08-03 23:16:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8ab9d77d719eb8b639dd22c593d6f35c SHA-1: 5b1513e93172f9ac258366f18fd57c99ac01df2d SHA-256: ce4618e9679cdd2e3f7352817ce715f96c33e31d2613b4e99fa287e96417470c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text that appears to be a title related to a digital functional settlement, likely a lure. The primary malicious URL identified is a redirector, suggesting a phishing or malware distribution attempt.

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=assentamento+funcional+digital+pdf In PDF document text
    • http://files.mysticmancreations.com/uploads/1/3/0/7/130739616/kumarebob.pdfIn PDF document text
    • http://files.headtotoeoldschool.com/uploads/1/3/1/1/131163957/d5410eae4.pdfIn PDF document text
    • http://files.musicatmainstreet.com/uploads/1/3/0/7/130739839/davetuxu.pdfIn PDF document text
    • http://files.100waystolisten.com/uploads/1/3/0/9/130969311/pamexatul.pdfIn PDF document text
    • http://files.everydaythread.com/uploads/1/3/2/6/132695445/lepugepenujas.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/1/0431/6787/5228/files/56137842103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/vaxezizutibodogim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/42712878663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4610/0377/files/fabukediz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7668/8798/files/47932285078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/college_algebra_sullivan_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2672/6568/files/30508720256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/84924531867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7464/0286/files/23270462811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/wifukafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/essential_university_physics_volume_1.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_off00004cf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CF6 5368 bytes
SHA-256: bb3920e28e75470fe23edefad87662b08223c16101b5bede3c039ca83b437f0a
font_01_sfnt_off00005f33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F33 10260 bytes
SHA-256: 71ddac0e078494112ac822ef6e1b26da6bfd252b3e245195ea54b1d840ef358e

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