Malicious PDF — malware analysis report

Static analysis result for SHA-256 740f73463f2b7f49…

MALICIOUS

PDF

41.6 KB Created: 2020-08-19 21:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0233c6c6df302204651d900e9ffb69cf SHA-1: 534c409015c37314eb22fa275b8af62d5fe49f1c SHA-256: 740f73463f2b7f49f1d7f90e5a574c09eea9de1bc98c8c3861de854c817b0c3b
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The document body text, though garbled, includes a URL that is also flagged as a malicious redirector. The ML classifier strongly indicates maliciousness, and the presence of embedded links points towards a social engineering attack.

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=lesson+plan+for+high+school+template In PDF document text
    • http://files.skylinevisioning.com/uploads/1/3/2/6/132681378/ratulamaxawig_sizosesupu.pdfIn PDF document text
    • http://rolol.togetherwalking.com/uploads/1/3/1/3/131381720/31f01d99d7.pdfIn PDF document text
    • http://files.ehdenis.com/uploads/1/3/0/8/130814423/0f7658e1448c.pdfIn PDF document text
    • http://zujaj.lauratofarides.co.uk/uploads/1/3/1/3/131383483/dexovenosox_domasotujuga_runegaja_gifovotajivo.pdfIn PDF document text
    • http://files.4-ucorp.com/uploads/1/3/0/7/130739567/7385382.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/1/0434/8664/2336/files/roxigapavovijutureloso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/7302/4679/files/figure_it_out_christopher_hart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pejodogidevetakuranuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/zevezepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1533/8144/files/nifonerab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6221/3273/files/cbt_nuggets_kickass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/burgess_shale_fauna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9482/6405/files/random_real_address.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7193/7441/files/reading_skills_and_strategies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6627/8556/files/jexumivizeniwoviwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2910/1735/files/ion_profile_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5833/0786/files/dishonored_2_trainer.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 8

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_off0000657d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657D 5372 bytes
SHA-256: bb121f8b2dcbbbe78d200750461e7c05bf22c6bc8644380a5e304a06b44904af
font_01_sfnt_off0000779b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x779B 9940 bytes
SHA-256: ac1486e2c3ee25b0f9f3d6c9528ca4f20cf6eea5dfa0233af15628733be6d388

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