Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f73f452eae0c28c…

MALICIOUS

PDF

65.5 KB Created: 2020-08-15 06:27:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db9b1f69d8c58e73ef4c6971290f4451 SHA-1: bce0e15c3f32d8dc9f350ad1bfbddc24446e896a SHA-256: 9f73f452eae0c28ca96d87ff39f84624691b6470d43da75bb6adc68ca64d9860
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, with one pointing to a known malicious redirector (ttraff.com). The document body, though heavily obfuscated, contains text related to 'Idiopathic short stature treatment guidelines' and the URL itself, suggesting a lure for a phishing or malware distribution campaign. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm for SEO manipulation or further distribution.

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=idiopathic+short+stature+treatment+guidelines In PDF document text
    • http://files.antonykolenc.com/uploads/1/3/1/4/131454986/fosilinawudu-wakir-wofizenomipime-wazaxenokivu.pdfIn PDF document text
    • http://lesepipo.reneegdesigns.com/uploads/1/3/0/8/130874431/dotopenegazo.pdfIn PDF document text
    • http://files.mjganesh.com/uploads/1/3/1/4/131407227/bolifazove.pdfIn PDF document text
    • http://files.immanuellutheranchurch.org/uploads/1/3/2/8/132814073/sijuvozu.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/1/0431/8488/1827/files/mukimanoditaxonigan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2109/0471/files/ketotalekudizojixuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5567/6583/files/53425539494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5960/9753/files/tibadet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/absence_from_work_certificate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6597/4690/files/8881474161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0184/7708/files/vshare_ios_9._0._1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/1638732295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/0645/3928/files/xuxuruvufibizokivoxoval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1247/9382/files/38002087135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/7330/0632/files/snurfle_meiosis_and_genetics_2_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5019/5354/files/neuralgia_del_trigemino_tratamiento_fisioterapia.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_off0000c01d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC01D 5424 bytes
SHA-256: 1dce840d9e20d2208d9179b5d08a548fee786b532dc2931e7b1089d749b190e4
font_01_sfnt_off0000d268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD268 11316 bytes
SHA-256: e8bb5285a3eb83c2d105fe5495e0e32c7064d44729352153a4cdd61b6112eace

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