Malicious PDF — malware analysis report

Static analysis result for SHA-256 676dc415ee7d163e…

MALICIOUS

PDF

33.6 KB Created: 2020-08-08 21:38:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6f1f3ff1cd952cd5d61380a19faa0ff SHA-1: 5698cef55dd6a5fdc9038be1f20d20d623db9012 SHA-256: 676dc415ee7d163eb405e47ffe88d7a7a7ea8512e404218010cde797e7bd1073
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector URL designed to lure users into downloading further content. The primary redirector URL is https://ttraff.cc/pify?keyword=thirsty+crow+story+in+english+writing+pdf+download, which likely leads to malicious payloads or phishing pages. The ML classifier strongly indicated maliciousness, and the presence of numerous external links points to a content-scraping or SEO-poisoning attack.

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=thirsty+crow+story+in+english+writing+pdf+download In PDF document text
    • http://tidepe.mortarboardatucla.org/uploads/1/3/0/8/130874254/e4f703338ab9a6a.pdfIn PDF document text
    • http://files.haddingtongarden.com/uploads/1/3/0/7/130739918/104605.pdfIn PDF document text
    • http://files.2andahalfcups.com/uploads/1/3/0/8/130874567/6260743.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/1/0428/1538/9855/files/wazutegom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5031/9517/files/dufetesurodesutakofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2729/2582/files/56167209938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/pinaguguwowajoduzewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0781/9422/files/99242724750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2537/5130/files/15610094502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6945/7063/files/19529651705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/30752254700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0467/2675/files/dopetofafuz.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 4

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_off000044ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44EF 5560 bytes
SHA-256: dc138404e4841d22a69aeb0f7d0890c46fed5182a0ad99855b7ff62501088812
font_01_sfnt_off000057ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57ED 10044 bytes
SHA-256: 2b9bd4a6a7a88c58ace63b82332a6e79e58583a41293de524b27a2930558d67c

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