Malicious PDF — malware analysis report

Static analysis result for SHA-256 25238eb4fdf45c4b…

MALICIOUS

PDF

40.9 KB Created: 2020-08-14 13:18:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f4e9459beed9bbd19e2c6afe1d262c1e SHA-1: ec06426d08aad28f920eb7414c3c8894e2da3d4e SHA-256: 25238eb4fdf45c4bfd8b4bce9554ebbe68a06b42f75ac39d930e67b5ec6e9781
202 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector, designed to trick users into downloading software. The presence of a 'download button' heuristic further supports this social engineering tactic. The document body, though heavily corrupted, contains the malicious URL, reinforcing the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=adobe%20pdf%20reader%20pc%20free%20download In PDF document text
    • http://files.libertyacresmercantile.com/uploads/1/3/2/8/132815737/0a9a4cd1c1a3.pdfIn PDF document text
    • http://fival.npnowblog.com/uploads/1/3/2/7/132712207/dofakamuwas_ganoxitilavamo_semunigasi.pdfIn PDF document text
    • http://files.mbcnavarino.org/uploads/1/3/1/3/131383821/xowenozuwusu-mulififugi-modofo.pdfIn PDF document text
    • http://xokafuze.balboapreschool.com/uploads/1/3/1/3/131378776/fudedej.pdfIn PDF document text
    • http://files.narwhalsandunicorns.com/uploads/1/3/1/1/131163867/gelilavanapuribofi.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/1/0433/9712/0154/files/28232706528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6159/9643/files/23599685833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/lewutej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2956/0481/files/15210248711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4736/0414/files/home_interior_design_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/new_headway_english_course._beginner._teacher_s_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/xogumevifiposij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/mysql_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7823/8886/files/cctv_camera_types_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7451/9201/files/17304095150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4043/9446/files/12435042908.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 3

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_off0000626c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626C 5192 bytes
SHA-256: c81bea806b96d333b60113fdfd10924995aded1c0b29be6a643b09d621e46a2c
font_01_sfnt_off00007431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7431 10120 bytes
SHA-256: cbc34704e3ce06017461e8c8100680ffa2dfeffa0aba8c2291054cd2c559f3b2

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