Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9060bc84b53800c…

MALICIOUS

PDF

47.7 KB Created: 2020-08-23 09:02:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 732d7519b04bba9517c7566297e23ac7 SHA-1: 6fccc665800719eae24be4d1de4e05f51f6e34ee SHA-256: c9060bc84b53800c16c6f9af9c0523f17930a3979537583a2cd0c235fd77d78b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link disguised as an answer key, which redirects to a malicious URL. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms this redirection to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a broader campaign to distribute malicious content. The embedded URL in the document body, 'https://ttraff.cc/pify?keyword=math+9+answer+key+module+2', is the primary indicator of the malicious redirection.

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=math+9+answer+key+module+2 In PDF document text
    • http://files.southernsourceinspections.com/uploads/1/3/1/4/131452944/8e90df4e8f892.pdfIn PDF document text
    • http://tikiv.stkjustlabskennel.com/uploads/1/3/2/7/132740285/7497131.pdfIn PDF document text
    • http://taxaresu.misskatskinks.com/uploads/1/3/1/8/131856214/6775278.pdfIn PDF document text
    • http://wunuz.drrichking.com/uploads/1/3/0/8/130814328/9e8751.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/1/0431/8108/0738/files/51709571150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9972/4703/files/92354564292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90675932679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/kuxuxak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/91180902481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7803/3303/files/kagotusibeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0845/8905/files/autohotkey_mute_mic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/vobete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/gotham_font_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1635/4977/files/82454947054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/garebus.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 1

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_off00007142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7142 5616 bytes
SHA-256: 4dac52d96e4ce63afdb34dec29c51945527f3c30d105fb747ce2af78d8ae2104
font_01_sfnt_off00008441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8441 14556 bytes
SHA-256: 828010d04df1cf7ec55072c7eafdbb6fef29cb2604615bf3da83890a0ab37063

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