Malicious PDF — malware analysis report

Static analysis result for SHA-256 4841743721fc8fdc…

MALICIOUS

PDF

44.8 KB Created: 2020-08-07 18:47:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8358db6891da35a9dab1094d85c3d472 SHA-1: d8f535a9a7b894c6239fd3f4c71ba9df4b7b3e6e SHA-256: 4841743721fc8fdcc4e4a6f3ad63c4475432eb42a7d1d48794a78927b3547b6a
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is disguised with a keyword related to oat health benefits. The document body, though heavily obfuscated, also contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The primary malicious intent appears to be redirecting the user to a harmful site via the ttraff.cc URL.

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=avena+beneficios+para+la+salud+pdf In PDF document text
    • http://files.petstylingbysarah.com/uploads/1/3/0/8/130874588/goposalakotefokisot.pdfIn PDF document text
    • http://files.msdiglobal.com/uploads/1/3/0/7/130739503/7039829.pdfIn PDF document text
    • http://files.ukirkstl.org/uploads/1/3/1/6/131606059/faxar.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/1/0439/1573/9304/files/cable_rope_overhead_triceps_extension.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98774508290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8307/0630/files/fundations_level_k_teacher_s_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6330/3575/files/xewetebupikitapirir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0294/2872/files/abecedario_en_ingles_escritura_y_pronunciacion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5804/3807/files/82163394363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2862/6080/files/puisi_candra_malik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/2003_chevy_trailblazer_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0842/6147/files/loraine_boettner_roman_catholicism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/fedamaxaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2779/8944/files/98678139747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7827/1651/files/65388744173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/cancer_immunology_and_immunotherapy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5846/1863/files/brother_sewing_machine_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9614/6074/files/business_communication_essentials_bovee.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000718e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718E 5340 bytes
SHA-256: 4b585b7b1e4e67590ca2bc6cd3f25f3f0c2d1c7a621b81f82c224f86ac0a3556
font_01_sfnt_off000083c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C9 10536 bytes
SHA-256: afdd54ffbd3eb2f96e22eaa31634ede3f87fca2749fff43a54e4d4c0ed273873