Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b5a597ab7927e50…

MALICIOUS

PDF

116.3 KB Created: 2020-08-10 15:21:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5016ecc57246eee07dd7acc6e03efd7 SHA-1: a2baaec01bc943c0ab5fea887dca9e531cdc4602 SHA-256: 8b5a597ab7927e50b5761b9d78251acf19d7931266274d824516345a444d5d66
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, indicating a phishing or scam attempt. The embedded URL 'https://ttraff.cc/pify?keyword=acinetobacter+baumannii+treatment+guidelines+pdf' is a critical finding. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily corrupted, contains fragments suggesting a lure related to medical treatment guidelines.

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=acinetobacter+baumannii+treatment+guidelines+pdf In PDF document text
    • http://files.compubc.com/uploads/1/3/1/4/131453989/8ee1d7e7.pdfIn PDF document text
    • http://files.gwe-design.com/uploads/1/3/1/4/131453982/cf975d71ccf56.pdfIn PDF document text
    • http://files.goldentreasureconsulting.co.uk/uploads/1/3/1/3/131383613/xuwadekatigivesafawa.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/1/0433/6146/8574/files/6323422367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2740/6746/files/76407924599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/sepokiwaxuvumomudeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8518/5702/files/50119038700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8618/3576/files/93006593465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4178/3959/files/sokiteso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8034/1917/files/apache_ranger_user_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0767/9387/files/33893792147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/nenamada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7097/9237/files/get_well_messages_for_cancer_patients_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4447/8874/files/popozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1433/2309/files/38979441032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3250/1656/files/gadalemuwovuberegigiwodu.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 6

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_off00018c22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18C22 5604 bytes
SHA-256: 4b6b129fcb7e50dfb6cd16971d10137db4acfd2f6f0ed56bfa1f1529b054a862
font_01_sfnt_off00019f05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19F05 10592 bytes
SHA-256: deea0193ee03012a14c07f96cf9d809929fba34e359dd26e79d95ba56fa8d727

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