Malicious PDF — malware analysis report

Static analysis result for SHA-256 62641197fc5699a5…

MALICIOUS

PDF

49.3 KB Created: 2020-08-06 19:04:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c4e6d01b3f1d106f2ac9756723179d45 SHA-1: d7a3d96a32611e6015e69c2e8fd699e719ab3a2e SHA-256: 62641197fc5699a5c1d15e21e913948d55be33d8b805b725d6e0c50221c9f3fc
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified as a redirector for SEO phishing. The document body text, though heavily obfuscated, contains the same lure text as the malicious URL, suggesting an attempt to trick users into downloading potentially harmful content. The presence of numerous PDF links further supports the SEO link farm heuristic.

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=clinical+psychology+journal+articles+pdf In PDF document text
    • http://detalo.newreligioncurriculum.com/uploads/1/3/2/6/132695569/4a8f4ae7ce1f1.pdfIn PDF document text
    • http://files.zebini.com/uploads/1/3/2/6/132695543/wimiwokorirob.pdfIn PDF document text
    • http://files.duachmusic.com/uploads/1/3/1/6/131606373/96557275cd.pdfIn PDF document text
    • http://files.randomgroovybiblefacts.com/uploads/1/3/0/8/130814576/dixidukaduras.pdfIn PDF document text
    • http://files.telfairelementary.com/uploads/1/3/0/9/130969026/bd94f2cf036.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/1/0447/4889/8458/files/mesotelioma_maligno_por_exposicin_a_asbesto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3355/8168/files/gojetavavagulokegim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xeniwepisovera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36726725464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/11202907351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/melezenosirulobilido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6002/3711/files/2009_kawasaki_vulcan_500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8042/4351/files/difezidefanurupix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9150/1990/files/free_xbox_game_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9751/3381/files/35968217255.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_off0000816b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x816B 5500 bytes
SHA-256: c9272269fa2b09ea8d6ced897974bcb70d2f0e783b3981c3e5f042e69e68fed5
font_01_sfnt_off00009429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9429 10424 bytes
SHA-256: 6da733714b350e5b0443fd5ac78072f03381dbc50bfd660db1f51ee7d99f5e31

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