Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecca3af68a7d5821…

MALICIOUS

PDF

57.1 KB Created: 2020-08-28 16:38:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66cddca803f31f435147bdec72def14b SHA-1: 2a6df3d6dd41a482b1d1be7c8fde3ed9acec1438 SHA-256: ecca3af68a7d5821a33240852dc53c3b4f8c2e493e98533acabe203f7491fb60
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. One of the primary links directs to 'ttraff.ru', a known malicious redirector. The document body, though heavily obfuscated, contains a reference to this URL, suggesting an attempt to redirect users 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.ru/pify?keyword=putlocker+no+manches+frida In PDF document text
    • http://files.dragonfly-books.org/uploads/1/3/0/8/130874240/dbf6359d280f2.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/1/0431/3976/0295/files/nemonukaxupibapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3429/files/aviation_safety_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0388/8287/files/ejercicios_numeros_primos_y_compuestos_5_primaria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5581/6608/files/14925545017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/zabimagiwepotefiwote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9335/files/40957418720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0736/9639/files/annotated_bibliography_rubric_high_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/zebozokaxuwuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/94877535195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9302/4151/files/linekowir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7930/2296/files/laranja_mecanica_online_legendado_me.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B1 5328 bytes
SHA-256: 058092a02450cee178afd2f02b03ab999ddc2174c0f0d25e70c0b9303fa245a9
font_01_sfnt_off00008b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8A 2240 bytes
SHA-256: 50ca125b0d257618552ed7dbde28693f79a27622ef902a95d7f43f51e5adca70
font_02_sfnt_off000095a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95A4 14180 bytes
SHA-256: dce3bb9029913b5a28b4f83c775d5361348c96aa82a49304dce4c4e61bd79bf4
font_03_sfnt_off0000c252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC252 16064 bytes
SHA-256: 44ec852068dc4d31738276f5724bdd4d47cdc8e17345993729f6c052c9f22ef6

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