Malicious PDF — malware analysis report

Static analysis result for SHA-256 cda3e0d5e2541be9…

MALICIOUS

PDF

42.7 KB Created: 2020-08-11 13:52:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 702220e1b58b714d4cf9c3aac7c2b471 SHA-1: 78dcfcb995aee03d1e5c8ad38d8763ad64a10249 SHA-256: cda3e0d5e2541be9ec38bfd473ae808b296dca8122431cd063547b2f4760f5f9
194 Risk Score

Malware Insights

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

The PDF contains a link farm with 16 external PDF links, including a redirector to ttraff.com. The document body text is heavily obfuscated but contains the URL "https://ttraff.com/pify?keyword=causes+of+hypertension+in+pregnancy+pdf", suggesting a lure to a malicious site. The presence of numerous PDF links indicates an attempt to manipulate search engine results or distribute content through a link farm. No scripts were extracted from this sample.

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.com/pify?keyword=causes+of+hypertension+in+pregnancy+pdf In PDF document text
    • http://bulagov.mooserange.com/uploads/1/3/0/8/130814328/difidud.pdfIn PDF document text
    • http://files.kyammo.com/uploads/1/3/0/7/130776599/bofajepivixakewip.pdfIn PDF document text
    • http://files.key2evolve.com/uploads/1/3/0/8/130874318/zasabuxemer_xawapikiguromik_balasoge.pdfIn PDF document text
    • http://files.rbvonline.com/uploads/1/3/0/8/130873738/levarok-fezalepaka-zipoluzuririred-wabib.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/1/0436/8711/6965/files/hooked_on_a_feeling_original.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/31697485777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5013/files/15529975591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5302/2369/files/show_hidden_folders_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/dialectic_of_enlightenment_philosophical_fragments.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/ficus_bonsai_care.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8089/3084/files/78000729930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4077/5071/files/business_intelligence_and_data_analytics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/fisiopatologia_de_neumonia_en_nios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/48353060791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8014/6334/files/awaken_the_giant_within_arabic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/25172665046.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_off000069b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B0 5392 bytes
SHA-256: a445a605b8bbb56ed004cca0920eba83c5709f7bcb4e3bfa2fa454cf0eaf2176
font_01_sfnt_off00007c10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C10 9924 bytes
SHA-256: af7cf14350cc2bb677ea4c04acc3c86c71999d74b8fccd3553bf74a82e1a6835

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