Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8298fbbf7c52883…

MALICIOUS

PDF

43.9 KB Created: 2020-08-10 06:23:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1597a3044174c1ad715934a27b894c4 SHA-1: 0ff9a3e5092f95a28210094344abce8106da6818 SHA-256: c8298fbbf7c5288332941d8d1c605d1d6d72390f36cb5baca1e928a1b381c411
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=the+chemistry+of+transition+metal+carbides+and+nitrides+pdf`. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links, many hosted on `cdn.shopify.com` and other domains, which is characteristic of SEO link farm abuse. The ML classifier strongly flagged this PDF as malicious.

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=the+chemistry+of+transition+metal+carbides+and+nitrides+pdf In PDF document text
    • http://files.george.work/uploads/1/3/1/3/131379980/3511025.pdfIn PDF document text
    • http://files.edenlankaholidaytours.com/uploads/1/3/1/1/131164124/9bd86503af.pdfIn PDF document text
    • http://files.homesnag.co.uk/uploads/1/3/0/9/130969204/jadowu.pdfIn PDF document text
    • http://files.artofmichaelnguillen.com/uploads/1/3/0/9/130969811/42f9f.pdfIn PDF document text
    • http://files.hernfarms.com/uploads/1/3/1/3/131398374/41d2b5b5d34cd.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/1/0431/4375/7992/files/evernote_annotate_apple_pencil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/vomotamekanolufop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8761/8463/files/pdf_file_editor_software_free_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4522/3581/files/zarifotobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9232/8102/files/vogonijelavozov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/mueller_report_full_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4497/7305/files/cancer_de_tiroides_revision.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6305/8340/files/adobe_after_effect_tutorial_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2388/3688/files/31251099697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6246/8514/files/23538019628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/minecraft_failed_to_login_invalid_session.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0235/4070/files/mac_show_desktop.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9F 5588 bytes
SHA-256: 7e0fd6397cae5ec89bc9822be3e141620f2939df5762df14581523ab31b1b6f8
font_01_sfnt_off00007e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E76 10408 bytes
SHA-256: 3e818de02b708500225c16c47d85c7de21aef0b5e946990d563d01a784c46644

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