Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0adac3fecbffbc7…

MALICIOUS

PDF

39.1 KB Created: 2020-09-18 14:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da6d85c4a086dd29004525d517c4ed1f SHA-1: 780483c1e99fdbaf93b51f5a16ca608c3bb0ab13 SHA-256: f0adac3fecbffbc713485da2139c71078342c533ad5740c04dfd5a5f38c37e1b
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for malicious redirector links, specifically pointing to 'ttraff.me'. The document body also contains the text 'Computer games unblocked at school' and numerous embedded URLs, many of which are part of a link farm designed to manipulate search engine results. These elements indicate a social engineering attempt to drive users to malicious sites.

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.me/wix?keyword=computer+games+unblocked+at+school In PDF document text
    • http://rotenunul.phlsalsafest.com/uploads/1/3/1/3/131379326/sapumuf.pdfIn PDF document text
    • http://bavasu.totsandco.org/uploads/1/3/0/7/130776089/zuwir-gilatewil-sisas-fajid.pdfIn PDF document text
    • http://files.stmarysstonehaven.org/uploads/1/3/1/8/131856131/zuwujujap_vetat_fibonogod_seduvuromug.pdfIn PDF document text
    • http://files.growingwithbrock.ca/uploads/1/3/2/6/132682802/suvenagodi.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/1/0438/6213/0848/files/23072238947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9311/2472/files/2498203164.pdfIn PDF document text
    • https://28099f96-2b54-4fa5-b8ec-691bc586b53b.filesusr.com/ugd/0010c8_0a8a6ab686a3447f9e6f0351150aaf25.pdf?index=trueIn PDF document text
    • https://cffb2bbf-8904-4df6-8b3c-21b9dd8958ea.filesusr.com/ugd/0dcf4b_dd684dc66e1d43c885cc25aa94abe89e.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/android_clean_architecture_google_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/ranenepigubolebafawaperol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8577/files/71340816140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/best_english_language_gcse_revision_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6770/3450/files/kaxonilo.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_off00005b3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B3A 5596 bytes
SHA-256: 29bf14e988312c4c6df4a3d3558210be914a041cd0766043b4cf0b91c4800e2d
font_01_sfnt_off00006e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0C 9848 bytes
SHA-256: 51ec30461e5e2ea4f90f748c7dfff41be0d59deed101f9d9ce84f44b9539b0f4

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