Malicious PDF — malware analysis report

Static analysis result for SHA-256 98a97d029f0ea87c…

MALICIOUS

PDF

45.1 KB Created: 2020-08-21 21:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a5af0cbcebd22aff682f3906b95e92e3 SHA-1: 983c7f2f681489c0552c93df8b97f11ca27409d5 SHA-256: 98a97d029f0ea87ccc31ecab44120ad817b048b03ff1d691dcb5ff714e21fe6e
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'Avid s6l 24c pdf' and the malicious URL 'https://ttraff.com/pify?keyword=avid+s6l+24c+pdf'. This suggests the PDF is designed to trick users into visiting the redirector, likely leading to further malicious content or downloads.

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=avid+s6l+24c+pdf In PDF document text
    • http://files.islandparkvillagefl.com/uploads/1/3/1/1/131164011/xiwonezesudumajazo.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/1/0432/7122/5494/files/giduxizeretewezedogesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87932640634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8648/6440/files/4667839719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8362/8697/files/da_form_1594_fillable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/mixumunogasuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4195/6775/files/kokulalarogekus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4015/3505/files/31448966115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/72385627085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/catch_22_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4111/1707/files/20690620545.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 1

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_off00007204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7204 5268 bytes
SHA-256: caf3c852f3a149f8d29b4446c43c40e2f05b4a4bc216801e2cff248d7407ff73
font_01_sfnt_off00008412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8412 10620 bytes
SHA-256: fade4a921b41feb0c4ead39a2732fb6bf5c6c6e39eb55108def12b7c1e02f37a

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