Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c566e4a99ef86c8…

MALICIOUS

PDF

43.2 KB Created: 2020-08-06 16:15:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eab1464e93c110f862f22601e356b164 SHA-1: 14eac016e92abb2660b90f8f2c2bac9fd1d0e395 SHA-256: 2c566e4a99ef86c85764fa4de9ab2420ac549b2a6541eea6ae9fdb3a4e9a646f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=antihistam%25C3%25ADnicos+de+primera+generaci%25C3%25B3n+pdf`. This URL is likely used to lure users into downloading further malicious content or to phish for credentials. The document also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse to improve search engine ranking for malicious content. The ML classifier also strongly indicated 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.cc/pify?keyword=antihistam%25C3%25ADnicos+de+primera+generaci%25C3%25B3n+pdf In PDF document text
    • http://nevatonot.waytoomuchstuffintheattic.com/uploads/1/3/0/7/130776661/liloza.pdfIn PDF document text
    • http://files.johnwilliamsartgallery.com/uploads/1/3/1/4/131453252/fivilijudu-maxuxezukiki.pdfIn PDF document text
    • http://files.minnesota42.com/uploads/1/3/1/6/131636775/xebolopoxenuxug-pilusijugatu-pidodopir.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/1/0431/4795/2292/files/disawaweginajunevejodezuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9850/5377/files/refotofirimemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9139/3702/files/reading_ielts_test_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/vixijamafobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1984/5278/files/10287860253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17418425376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1708/3802/files/ssc_stenographer_reasoning_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2309/6216/files/41222255288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2222/8376/files/91322626570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3964/6108/files/70648143733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0053/4952/files/21953890191.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 6

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_off0000656d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656D 5716 bytes
SHA-256: db74f30597d196271dc67457f41e5f85bb213235aa96c2cbc564db2cfdc18326
font_01_sfnt_off00007878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7878 11232 bytes
SHA-256: c1b429239db48c77a05fb39d0c74bc8cb981f21f243997c02a193e812257ed59

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