Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ec1deb509855a7…

MALICIOUS

PDF

49.1 KB Created: 2020-08-10 23:47:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5202ce1636267a07b0c61e79a137bf17 SHA-1: 180fe02f04ef89ce9971ce8f22ab83255561f8c1 SHA-256: c3ec1deb509855a7f4ff1694af759719f341b02408c9e9bde964919d169842ac
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic, suggesting it is part of a link farm designed to attract traffic. The embedded URL in the document body, 'https://ttraff.ru/pify?keyword=metabolisme+protein+pada+unggas+pdf', is the primary indicator of malicious activity, likely serving as a redirector to further malicious content.

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=metabolisme+protein+pada+unggas+pdf In PDF document text
    • http://files.exploreproductivity.com/uploads/1/3/1/4/131438156/dde749d2.pdfIn PDF document text
    • http://files.ammpurage.com/uploads/1/3/1/3/131379439/molaketokuzuno.pdfIn PDF document text
    • http://files.ivotech.net/uploads/1/3/2/6/132683088/8417288.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/1/0435/6440/0798/files/tekokuremitefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5483/9461/files/arithmetic_and_geometric_sequence_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tijubijevuvikupox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7668/0869/files/jigiduzavafuxodinedisumum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0947/2669/files/82070266655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6867/0620/files/woxunixogomaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/fitaresisazefolela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1236/6231/files/lunuzoxuzasuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2511/1972/files/gusevalurilugesikudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8282/5371/files/11559364101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/similar_triangles_problems_with_answers.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000081ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81ED 5508 bytes
SHA-256: 9483f8bce642c78ffb9681ad1a68d47ef968f0255f21b0eab5927d47b3550063
font_01_sfnt_off0000948a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x948A 10240 bytes
SHA-256: ded1f84f5fff09fe0599c1523d304f0d8ec393eb3aa9967317fd45783d9381c3

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