Malicious PDF — malware analysis report

Static analysis result for SHA-256 1397bb0578f78fc1…

MALICIOUS

PDF

39.9 KB Created: 2020-08-19 15:42:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a5eec840850890a12f76f4452909a7e5 SHA-1: a2b5529db4f06d5449dfc97296880c509b1e2ae0 SHA-256: 1397bb0578f78fc14b4b538312131c31c7e541d209911833c134c5c073e029e4
194 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.ru/pify?keyword=bahubali+movie+video++mp4, which is flagged as a malicious redirector. The document's structure suggests it is part of an SEO link farm designed to lure users with keywords like 'Bahubali movie video mp4' and redirect them to potentially harmful content. No scripts were extracted, but the presence of numerous links and the ML classifier's high confidence indicate malicious intent.

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=bahubali+movie+video++mp4 In PDF document text
    • http://files.indulge1461.com/uploads/1/3/0/7/130739023/riroriluwunuko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0844/2020/files/43776869781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4244/6229/files/16036606974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/kigonodes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/dinareweto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4991/7347/files/wow_pvp_rankings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5812/6245/files/acrobat_writer_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0377/1041/files/rimogezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9753/9231/files/33357592005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2121/9493/files/14604347156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/potolemojobotugikoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6235/8179/files/biblia_catolica_descargar.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51F4 4960 bytes
SHA-256: 84f6545259847eac00fe5d14bf0bea2b887f63badb87ff3312bf0f9a844d3668
font_01_sfnt_off000062d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D2 9872 bytes
SHA-256: 31e335684096383325e996922c2fe50ebed9b8d3ff59ceedaa2365e85e2ff46a
font_02_sfnt_off000084a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A7 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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