Malicious PDF — malware analysis report

Static analysis result for SHA-256 7254a4e9a7114cd1…

MALICIOUS

PDF

67.6 KB Created: 2020-08-21 16:17:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9cf3c97e7009aef736cfd30b95117dc2 SHA-1: 6dbcddcf1ee61cd7d12cf590155d1470660a428d SHA-256: 7254a4e9a7114cd1c67d91610b19fa7a1429a93178c6c26d13d56b463e3e0155
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though malformed, contains text suggesting a lure related to 'evidence based medicine clinical practice guidelines'. The presence of many links, including to a redirector, indicates an attempt to lead users to potentially harmful content, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.ru/pify?keyword=evidence+based+medicine+clinical+practice+guidelines In PDF document text
    • http://files.samanthanathey.com/uploads/1/3/1/8/131856173/8277457.pdfIn PDF document text
    • http://files.starladeanmft.com/uploads/1/3/1/3/131381675/zisesitolimogedaxebi.pdfIn PDF document text
    • http://files.dallasclinicalpsychology.com/uploads/1/3/2/6/132681482/fuxozup_jixeruzodamozu.pdfIn PDF document text
    • http://files.explicationcentral.com/uploads/1/3/1/3/131381605/jejijasarug_vagapovafukenuk.pdfIn PDF document text
    • http://siworobub.breckinridgecountyfair.com/uploads/1/3/1/4/131483068/3251483.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/1/0440/6856/9238/files/examples_of_simile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/print_handwriting_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8839/6959/files/kendo_ui_scheduler_editable_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1639/4648/files/44245505617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9394/1671/files/introduction_to_robotics_craig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5291/6119/files/immunization_records_washington_state_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/nunogijuxutonijafemepojel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1427/3698/files/tetadam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5689/6927/files/49764582477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1272/6677/files/dusubeniselajujoxoli.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 4

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_off0000c931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC931 5548 bytes
SHA-256: a43982db45b918e0dd563496aa3a3a1d70a4952a256ddf1a5c14d2eeb58eed87
font_01_sfnt_off0000dbf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF0 10920 bytes
SHA-256: b7319095690ab23e8372c229299645c1bfd28838d5b2e9d2a05fd7baf7cd488d

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