Malicious PDF — malware analysis report

Static analysis result for SHA-256 98cb459cbf5bd6ce…

MALICIOUS

PDF

41.1 KB Created: 2020-08-02 15:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 637b0bb5c8ba39e63eec6dfeef4cdb8a SHA-1: d586a9b9f6a4c45540312d0ff303d2f54677835e SHA-256: 98cb459cbf5bd6ce5441476be69853dadf48bba39c53ff2ba23c994008e0b215
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous external links. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com', which likely serves as a gateway to malicious content. The document body, though heavily obfuscated, contains references to URLs that are also present in the extracted URL list, reinforcing the link-based attack vector. The primary intent appears to be directing users to potentially harmful external sites.

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.com/pify?keyword=utorrent+default+settings In PDF document text
    • http://files.rochellehallconsult.com/uploads/1/3/1/4/131453610/f05ddf9.pdfIn PDF document text
    • http://files.meghanjaneyoga.com/uploads/1/3/0/9/130969220/gibizo_kufazi_gizuto_dutenulobozisa.pdfIn PDF document text
    • http://files.exclusivedancerecruitment.com/uploads/1/3/1/3/131384412/821821.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/1/0432/4383/1458/files/jiwinadoliwasukiza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27392185694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/wan_miniport_ikev2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/53782877528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2476/7400/files/filter_by_state_onlick.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/gerokubogifuzalidurizewiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/46345401304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6368/0929/files/wodozidatorujimojokigoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/musigaletataw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4533/9814/files/nifezekilorunozilaxuburo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5419/4085/files/89070462143.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 8

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_off0000625b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625B 5064 bytes
SHA-256: a76c81cd3622e7aa2875d50e743fcc446dff7e08ea39ff371f52832404badbb7
font_01_sfnt_off000073a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A8 10588 bytes
SHA-256: b5d15431ce7d9d90c94161183df6b8e59a3cfd836bffebaa6e34c20a1eea1848

Open this report in the interactive analyzer, or submit your own file for analysis.