Malicious PDF — malware analysis report

Static analysis result for SHA-256 a372adfdc43528f1…

MALICIOUS

PDF

46.3 KB Created: 2020-08-06 22:38:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ce0a2988c5c29eebabdfa11cfb272d2 SHA-1: 138816a38ec1d37fcc37e50f96603d12825ee214 SHA-256: a372adfdc43528f1f0d73e847c3df9fb32f575e0058da09b61f9a75dd014dc1c
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wb?keyword=theories%20of%20educational%20supervision%20pdf', suggesting a lure related to academic supervision. The presence of a link farm heuristic further indicates an attempt to distribute malicious links.

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/wb?keyword=theories%20of%20educational%20supervision%20pdf In PDF document text
    • http://files.aleecheapitts.com/uploads/1/3/1/3/131378993/pukijusazuwe_posoxebatagurig_jaragekus.pdfIn PDF document text
    • http://files.jamestylor.com/uploads/1/3/1/3/131380292/3271990.pdfIn PDF document text
    • http://files.francescaeldridgehealth.com/uploads/1/3/1/4/131407102/wolipewefak_bozelelalarezox_zifogomavava.pdfIn PDF document text
    • http://files.aussiereels.com/uploads/1/3/1/4/131437513/wikenefatuxazovi.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/1/0430/9945/5642/files/38101333047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/pupikafuvoditalenewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1551/9912/files/12778258980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/minecraft_tree_growth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2214/0070/files/basic_life_support_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9182/0711/files/vefalorar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/the_vixen_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4164/4963/files/88495757211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mekokagowofulagifofid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3195/1517/files/adjectives_describing_places.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5731/4983/files/ayurvedic_food_chart.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 5

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_off00007799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7799 5252 bytes
SHA-256: 3604ac83d89a9d0c8967f10eec13ff9d6015c70ef0f2e3be4601cb5f6d61f8b8
font_01_sfnt_off00008974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8974 10252 bytes
SHA-256: e145717ec625cde72d962c57df9e8429b052034c8f671e9b7c579f61f2c7a1b2

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