Malicious PDF — malware analysis report

Static analysis result for SHA-256 8230c0ff8ca981f3…

MALICIOUS

PDF

49.0 KB Created: 2020-08-19 14:50:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6754d5f114e21f837af452a0954b6cef SHA-1: e110f89e7e50a4456037680dcf65cff3016da7bd SHA-256: 8230c0ff8ca981f31898432d39d6e73ede0ef2beade6af171d0d942e01fb28bd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as academic resources, but they redirect to a malicious domain. The primary redirector URL is https://ttraff.ru/pify?keyword=onion+root+tip+mitosis+lab+report+discussion, which is flagged as malicious. This indicates a phishing or scam attempt leveraging SEO tactics to distribute malicious links.

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.ru/pify?keyword=onion+root+tip+mitosis+lab+report+discussion In PDF document text
    • http://files.pammiller.co.uk/uploads/1/3/1/0/131070452/lanaxuwu.pdfIn PDF document text
    • http://lalon.sneakerbots4all.com/uploads/1/3/0/7/130776054/5a691c56b3f21.pdfIn PDF document text
    • http://files.kelownaplumbingsolutions.com/uploads/1/3/1/3/131398156/vudejinu-kedav-benosagulita.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/academic_english_reading_and_writing_across_the_disciplines_pearson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5982/0182/files/16592079033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/vijorujafebovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4285/6345/files/discord_js_totoal_messages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/47950481956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/sovirebubere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1102/9667/files/fashion_trend_report_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0247/8237/files/kptcl_recruitment_notification_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7194/6398/files/32196366384.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000737f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x737F 5268 bytes
SHA-256: 8933025069f3bb6fe6ac15ebefd4c38d6c6ef9aebcc124b93fb1b4a5293c950b
font_01_sfnt_off00008539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8539 10304 bytes
SHA-256: 90ad1016335133064598e9aa6590c972868e23a73d7a84b262e9d519b348a523
font_02_sfnt_off0000a869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA869 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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