Malicious PDF — malware analysis report

Static analysis result for SHA-256 0582c853aaeee2bc…

MALICIOUS

PDF

40.4 KB Created: 2020-08-19 00:28:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 078b91f2ce850bf58103d3a5541eb406 SHA-1: d60d56e5555465e8894f59e779fb328e190bae46 SHA-256: 0582c853aaeee2bc2e8bc2fe139306f1b26c2c15f704077dc1a8e54b28d0962c
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector infrastructure associated with malicious activity. The document body, though partially corrupted, includes text suggesting educational worksheets, a common lure for phishing or malware distribution. The presence of a malicious redirector URL strongly indicates an attempt to lead the user to a harmful site.

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=addition+math+worksheets+for+2nd+grade In PDF document text
    • http://manuzi.downonthefreedomfarm.com/uploads/1/3/1/3/131384081/finudu.pdfIn PDF document text
    • http://files.assv4u.com/uploads/1/3/1/3/131379591/8524758.pdfIn PDF document text
    • http://zumur.francescomptonlibrary.com/uploads/1/3/1/6/131637309/a65632ab15dd20e.pdfIn PDF document text
    • http://vopowimub.barronparkpreschool.com/uploads/1/3/1/1/131164048/paneginozuzuw_tugigekinafukot.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/1/0430/8713/4882/files/73611223321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5730/8063/files/red_proto_drake_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7418/2563/files/operational_auditing_principles_and_techniques_for_a_changing_world.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/xizeliwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/sixav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3432/8735/files/apush_themes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9226/1529/files/46691125526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/rizeporepageneminomanetof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/53549605663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9433/4869/files/28638782728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3048/4904/files/kajon.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_off00005e91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E91 5564 bytes
SHA-256: 63abf75a7d0b6150d07ca701af37a5125ef9100c1d759e1d851ff8b5a203e4d4
font_01_sfnt_off00007161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7161 10384 bytes
SHA-256: 83ad5ee8e47d8c1424c80d561218f35c55e1386ce539d18fce2319a0819683a2

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