Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd14ed3c1b747f49…

MALICIOUS

PDF

32.7 KB Created: 2020-08-23 19:33:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea859204778d4aed97c4c29fd1d472d7 SHA-1: be2f3034970e94b2fb3c18cb0af2a047be5e57c1 SHA-256: dd14ed3c1b747f49cd162f6bae1f5726a4c79e85149cc481a6c18519617217b5
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=amos+lee+sweet+pea+sheet+music'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on suspicious domains, further supports a link-farming or redirection attack pattern. The ML classifier also 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.cc/pify?keyword=amos+lee+sweet+pea+sheet+music In PDF document text
    • http://puwodovo.ops-copiers.com/uploads/1/3/2/8/132814742/tolofoki_nediwapi_sasuxagu.pdfIn PDF document text
    • http://gisazeg.thomasbramel.com/uploads/1/3/0/7/130738971/9bcda4af2638c.pdfIn PDF document text
    • http://files.apafss.org/uploads/1/3/1/8/131872087/piguw_xoditixaxibafe_xapavo.pdfIn PDF document text
    • http://files.taneatismikrospilias24.com/uploads/1/3/1/4/131407709/zagopemireto_xitumuliwajemi.pdfIn PDF document text
    • http://jewaraso.d-aleksandar.com/uploads/1/3/1/8/131856072/7fe695da2346.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/1/0428/1496/3868/files/h_and_m_size_guide_plus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/word_template_brochure_tri_fold_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8634/7414/files/pre_algebra_textbook_mcdougal_littell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/jutowozegubunetifazadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/44275584500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/nixogixibiditilig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/6518/9019/files/zeponapedaxatusag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3439/5295/files/wedding_invitation_for_friends_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/dumusa.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_off0000457f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x457F 5160 bytes
SHA-256: 721cf8218c8f2315f854e4663e40a6cf7f627fbb186a463b4ec75183d22a2a9d
font_01_sfnt_off000056ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56FF 9084 bytes
SHA-256: c96a4cbab444023de40fd9c18dc3b7e55579df39b226c93c6e6ddd41eb96c2eb

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