Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d8da516d66cbdc…

MALICIOUS

PDF

55.4 KB Created: 2020-08-27 21:39:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 912eba71e93793610c4b359bfbb91ae1 SHA-1: 7302c3469b48e06c76a161a2a6fe7e40135952ea SHA-256: 79d8da516d66cbdc30977e23814d23735328c3dc8c4a58137ae7eb37ff6db73e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external link farm, with several links pointing to redirector infrastructure. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely used to host or distribute further malicious content. The document body, though heavily obfuscated, contains URLs that are also present in the heuristic findings, reinforcing the malicious redirection attempt.

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.com/pify?keyword=hungarian+pa+63+magazine In PDF document text
    • http://ketator.heritagefloristcortland.com/uploads/1/3/1/4/131453558/6172085.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/1/0440/0798/1214/files/neurology_app_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7736/1824/files/32626800837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/officejet_pro_8600_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/administrao_de_medicamentos_via_parenteral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4076/3030/files/blocking_queue_implementation_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0862/9659/files/tafsir_surat_al_waqiah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/39132240983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6880/8613/files/lazirevebizupapefuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/pujojivap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1850/1799/files/65916808043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3655/6962/files/voxololugofuxeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0969/6156/files/atomic_structure_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4393/0791/files/jio_phone_music_call.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off000078f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78F9 5260 bytes
SHA-256: 6fe33b3d37e7120eaa8ab5e4e8b0e4ebfe6f9398465b91e7012167fea6ab9e03
font_01_sfnt_off00008aca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACA 16164 bytes
SHA-256: 7e11c6b8d9031991918b4f3ed33cfdf2cfb5ce1c1387d3636521476549179f31
font_02_sfnt_off0000bc4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC4F 16060 bytes
SHA-256: c43c81af3addadc619f1b50b0eb79006c69e58cb90abf43f7a5fbd940e22698c

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