Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d4007c09c0d1df8…

MALICIOUS

PDF

35.7 KB Created: 2020-08-15 02:49:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a221b8e778de61515b6467956c424235 SHA-1: cdf012995028a1845cad0b56d94bb9410926a66f SHA-256: 4d4007c09c0d1df85e4ae3f91a5e12c2da94166825b59499270f989732a7d913
162 Risk Score

Malware Insights

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

The PDF document was flagged as malicious due to a critical heuristic identifying it as a redirector link pointing to known malicious infrastructure. Additionally, it contains a link farm with numerous external PDF links, many hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute content. The primary malicious URL identified is https://ttraff.com/pify?keyword=alaipayuthey+ringtone++masstamilan, which likely serves as a gateway to further malicious activity.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.com/pify?keyword=alaipayuthey+ringtone++masstamilan In PDF document text
    • http://files.kimkirch.com/uploads/1/3/0/7/130738819/e954015d.pdfIn PDF document text
    • http://files.radoslawrogoza.com/uploads/1/3/1/3/131384300/nolirujowexeboj_wetased_nedenegojizi.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/1/0433/5117/9416/files/medulatulexikodazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1127/4914/files/31091030894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1701/8267/files/drop_all_tables_sql.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8688/6552/files/lufofuxito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/binur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0708/0605/files/57700046399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3669/files/active_directory_domain_services_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9820/5349/files/catalogo_general_de_cuentas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/index_google_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6861/1989/files/91617579465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/72199491412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gidawibozifuniji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/famigetopomabemegaj.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 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_off00004ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ED9 5324 bytes
SHA-256: 608eae8f41a538d7e812283b6b662cd0a033f995aa084d5db5463d5f060ce8bb
font_01_sfnt_off000060c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C7 9696 bytes
SHA-256: bea270bd3c3c84f7b665327ca8a465991bd2aead82a50ca777edc734205f1f89

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