Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f67096e9b2dfe30…

MALICIOUS

PDF

51.5 KB Created: 2020-08-05 15:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c6959703ab747c85ee62fa9b083303a SHA-1: f197d9ba19f8c313c30df5794dddc782b4e22a5c SHA-256: 6f67096e9b2dfe30012c26eda6b465a996797c1190a8474d61d4b6cde946c9d3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'ttraff.cc' redirector. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to lure users into clicking it. The ML classifier strongly supports the malicious verdict.

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/wb?keyword=english%20puzzles%20and%20riddles%20with%20answers%20pdf In PDF document text
    • http://files.strathmorechildrenschoir.com/uploads/1/3/0/7/130739222/8739174.pdfIn PDF document text
    • http://files.sharitavonsikphotography.com/uploads/1/3/0/7/130739470/892586.pdfIn PDF document text
    • http://files.nhlogcabinrental.com/uploads/1/3/2/8/132815318/751000.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/1/0429/7926/2623/files/828580197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5353/9747/files/firomezajanijir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4803/2666/files/axis_bank_credit_card_closure_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/rigudojutitulut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/nefinalatapusig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5361/2182/files/unity_camera_movement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/cartesian_dualism_mind_body.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3330/4981/files/dufiribipilafuvunaxegakam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupesuditijativerawepafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3517/8661/files/300_core_java_interview_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/12352650757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9827/4978/files/65662341289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0505/1029/files/32153870334.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_off00007ec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC1 5400 bytes
SHA-256: a217f547089b6ed1de94394e9297ec065494bbcf865458a26f084d9eb4c8cefc
font_01_sfnt_off00009133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9133 2464 bytes
SHA-256: e2471563708f8728ce2eaf177b5360effcf222f88fef6f1e84702366dd34a49d
font_02_sfnt_off00009c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C0D 10704 bytes
SHA-256: 084baed2c08ba575d33f2552c5a9aa5ddccc03a33283e74c0ad2bb62444a3b08

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