Malicious PDF — malware analysis report

Static analysis result for SHA-256 98990ddf70e60703…

MALICIOUS

PDF

47.2 KB Created: 2020-08-22 08:41:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 182b70a71cf392242d9e94b52b720e68 SHA-1: 7ae6ee3b273f8e536d8638813fc798e592edef49 SHA-256: 98990ddf70e607037fa45a0430922b3fa2e9cbc9bc41f72eb5c99251ddda56fe
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains a URL that matches the redirector heuristic, suggesting the document's purpose is to drive traffic to malicious infrastructure.

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=wow+classic+warlock+leveling+guide+pvp In PDF document text
    • http://fetixilus.embodylifeyoga.com/uploads/1/3/0/9/130969690/b898176f5b8.pdfIn PDF document text
    • http://fenabusos.wendytimm.com/uploads/1/3/0/7/130738731/6488098.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/1/0429/2290/1663/files/brett_young_mercy_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4430/5046/files/5990655794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1761/7057/files/domizigedaguzus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9180/1752/files/15188194534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9680354999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34707652888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18187133080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2704/6301/files/mulozizabozenolodulag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/aluminum_doors_and_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5353/0782/files/network_engineer_cv_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/1733129711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/4260/4965/files/tratamiento_corona_plasticos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2253/3276/files/gawowinivodadepeku.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 5

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_off00007801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7801 5468 bytes
SHA-256: 6d06c7b8a95d5bf17d9c23730bb0ffb3d316184cb76a2522ba40f23ceaff3f9c
font_01_sfnt_off00008ac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC4 11408 bytes
SHA-256: 6324a6620aa850e68ccb18bbeb1c15db55d87e3e2cb614cf7aee9152b19df103

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