Malicious PDF — malware analysis report

Static analysis result for SHA-256 9684418e2d7a0f8f…

MALICIOUS

PDF

35.8 KB Created: 2020-08-20 03:23:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73a5281795a971fe5ad74962a0d01aaf SHA-1: cc55001f2767739ce578430fd56e8f077c23d0a5 SHA-256: 9684418e2d7a0f8fe52c384d7a4213ebb93e0fa70ee3e42796c6ed46d2c56fc3
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily corrupted, contains text that appears to be a lure for sheet music, and the malicious URL is directly related to this theme. The primary malicious URL, 'https://ttraff.cc/pify?keyword=hindemith+oboe+sonata+sheet+music', is a critical finding, indicating a redirection to potentially harmful content. The presence of a link farm further supports the malicious intent.

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=hindemith+oboe+sonata+sheet+music In PDF document text
    • http://xagawo.lexingtonal-anon.org/uploads/1/3/0/7/130740450/1548690.pdfIn PDF document text
    • http://files.ryanchiropracticclinic.com/uploads/1/3/1/6/131606343/zubogitefososotojiso.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/1/0430/2562/9335/files/modal_verbs_probability_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0081/2952/files/usps_customs_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7542/0835/files/59124320991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1332/2398/files/wiczenia_angielski_dla_dzieci.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3480/4375/files/zisejuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7512/5919/files/toefl_ibt_reading_comprehension.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/40366538084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0142/0696/files/14046650868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/66410160539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6313/9733/files/83364451137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3166/5562/files/16187492140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8441/5143/files/fikobevitoligana.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
🗂 Part of campaign: highlandmillsumc.com 4 samples

Related samples 2

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_off00004d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D37 5152 bytes
SHA-256: c3c5b6ef783e744b21f852219ebacd87c5f1200adac611e26a67a2a3e6ddc464
font_01_sfnt_off00005e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E84 10480 bytes
SHA-256: 77336b5d63bd782c9bca0934933b9790972a11d7b8f11c07cde68ed0c6ff7f2f

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