Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9b48a6a8f5caba…

MALICIOUS

PDF

40.5 KB Created: 2020-08-05 15:36:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 970cde7dc9d6c089172fe8f27fe30b2c SHA-1: 01bd169fe3ec18dd803771c71318912ade1d0530 SHA-256: ed9b48a6a8f5cabae4f57197e78b526ab7727570ecdf77c7bdfedae295fc907e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and contains a high number of embedded links, including a critical finding of a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=tabla+de+verbos+auxiliares+en+ingles+pdf, which likely serves as a gateway to further malicious content. The document body, though heavily obfuscated, also contains this URL and numerous other links pointing to external PDF files, suggesting a link farm or redirection strategy.

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=tabla+de+verbos+auxiliares+en+ingles+pdf In PDF document text
    • http://files.poeticspace.net/uploads/1/3/0/7/130739910/7749212.pdfIn PDF document text
    • http://files.eringipfordfreelance.com/uploads/1/3/1/4/131453005/3119003.pdfIn PDF document text
    • http://files.kaylacranston.com/uploads/1/3/0/7/130740517/8858f7.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/1/0436/2724/9826/files/42882582151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7300/1889/files/development_economics_masters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/mhxx_brave_style.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/90671754078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ridojunewosinojep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/lijepowolowedomixukena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1703/files/20374103510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8125/3535/files/zujebetekuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6513/files/935549433.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_off00005f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F27 5424 bytes
SHA-256: cf7fc212771f909286b052f48936a624f0880b16846db3fc8c68e55a9f121606
font_01_sfnt_off000071ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AD 10520 bytes
SHA-256: 124b7fbc4bfdd87009053cc1a38acb8e21f9a8235c4c39cbdcc4d224338e206c

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