Malicious PDF — malware analysis report

Static analysis result for SHA-256 7305a2c05845d69d…

MALICIOUS

PDF

42.6 KB Created: 2020-08-05 18:05:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76962060cda075e52b937a540b795699 SHA-1: c7b0c0fbf265d797d142fbd902d6cbce846a22de SHA-256: 7305a2c05845d69d99cc4b5836efa3d8d92800c46ddcf540934247c4c263be67
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 (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify-hosted PDF links, suggesting a link farm or phishing lure for free PDF downloads. The ML classifier strongly indicates maliciousness.

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=contexto+social+libro+pdf In PDF document text
    • http://files.elizabeth-mendenhall.com/uploads/1/3/1/3/131383825/13a72db332.pdfIn PDF document text
    • http://files.renaissanceone.org/uploads/1/3/1/4/131408117/feraratofibulosa.pdfIn PDF document text
    • http://files.vancoschool.com/uploads/1/3/0/8/130814588/nafiwif_vatabukavowigeb_giguduzutep_xuxadofulumo.pdfIn PDF document text
    • http://files.puremovementdance.com/uploads/1/3/2/8/132814958/4882030.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/1/0431/6325/4944/files/12736027715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5907/6502/files/razipasakexeniz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/nodatesurujijesom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7052/9436/files/76475800316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/genetics_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4946/8582/files/94647300788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/kukatexubifemejolufefoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6087/7729/files/ciencia_de_los_materiales_dentales_phillips_completo_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/amore_al_tempo_del_colera_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3026/5511/files/gizegedij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3695/8106/files/ethyl_acetoacetate_reactions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0671/4268/files/longman_academic_reading_series_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4074/1275/files/dugasitesitufotiso.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 7

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_off000069b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B6 5260 bytes
SHA-256: 4b9e18ee6ad0b202d4e625a963520f48303ba41ae25d7757c7332bea98b2856b
font_01_sfnt_off00007ba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA1 10112 bytes
SHA-256: 884ccb56138c88137e09197383976b0f300afb19e5beef1fdb2f07fe3c813497

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