Malicious PDF — malware analysis report

Static analysis result for SHA-256 98a38ff95d6eee93…

MALICIOUS

PDF

37.7 KB Created: 2020-08-03 19:30:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea2eb8e9e821266f6ad17a444c20b5fa SHA-1: ecfe5877008545f82254b61e02f2a1cc7864ff5f SHA-256: 98a38ff95d6eee931114577cdcfb81258fbc8c6023b0f6bf366b0856437e4865
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 known malicious redirector infrastructure. The document body, though malformed, contains the URL 'https://ttraff.cc/pify?keyword=esl+possessive+adjectives+worksheet+pdf', which is also listed as an IOC. This URL is likely used to redirect the user to a malicious site. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm for SEO poisoning or to obscure the final destination.

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=esl+possessive+adjectives+worksheet+pdf In PDF document text
    • http://files.greatfallsredeemer.org/uploads/1/3/0/7/130739268/14397743.pdfIn PDF document text
    • http://files.narrabrishow.com/uploads/1/3/2/6/132696210/nuvabagor.pdfIn PDF document text
    • http://files.naturalnesters.com/uploads/1/3/2/6/132695302/604114.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/1/0433/4295/4650/files/susaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9887/3762/files/mukalinoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6413/9669/files/8829647545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3468/1250/files/96100436229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/sobazonumafarewaxagul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9621/0594/files/artforms_11th_edition_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/43778875991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8514/3965/files/fapisenumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/zavatimavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/53036346090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/41657860671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8108/0738/files/welavatirim.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 2

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_off00005404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5404 5492 bytes
SHA-256: d62256dd72c5b8ee70485c1ab0339b4fa5b822932686ac4bcfb9d15c9a138384
font_01_sfnt_off000066cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CD 10420 bytes
SHA-256: 4c7c64e45e28c9974508196b85521da920dd4f86bc83c41031c755502f5c54a8

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