Malicious PDF — malware analysis report

Static analysis result for SHA-256 635782b830e61a4b…

MALICIOUS

PDF

39.3 KB Created: 2020-08-10 14:55:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 88a313904861cf88b7daa783dc45e5c7 SHA-1: cc03e1c536a1458c947cff10d6f740952d670ad5 SHA-256: 635782b830e61a4bf5e3ac6dc657d7eb50f1c5560a64fcfa23b507b2bb57e79e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirection and a link farm, pointing to a phishing attempt disguised as sheet music. The primary malicious URL, https://ttraff.ru/pify?keyword=carnival+of+venice+trumpet+solo+sheet+music+pdf, is identified as a redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to lead the user to a malicious site, likely for credential harvesting or further malware delivery.

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=carnival+of+venice+trumpet+solo+sheet+music+pdf In PDF document text
    • http://files.liftyourlifewithlaura.com/uploads/1/3/1/6/131636941/4155094.pdfIn PDF document text
    • http://gigadeb.qualityfoodvi.com/uploads/1/3/1/3/131380600/vupaj.pdfIn PDF document text
    • http://nutoged.bakerycreationsbykeri.com/uploads/1/3/0/7/130739561/d0ff11.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/1/0432/7096/3366/files/17249940644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/7797089440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5362/0136/files/strategic_management_in_public_administration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7912/9501/files/wafowakoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/degozetavuwizipelebulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/barron_s_essential_words_for_the_ielts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7234/6526/files/zufalef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/gibebuvudomodaketerumes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8063/7861/files/visa_on_arrival_form_thailand_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6331/1513/files/can_you_annotate_a_in_onenote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6415/5560/files/algebra_ebook_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7710/7865/files/beatles_piano_sheet.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000467e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x467E 5360 bytes
SHA-256: f3b1ffbd6d60cffeaf23dcca66aff82fded0602150a635ecf23cb8664977e302
font_01_sfnt_off0000588d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x588D 9424 bytes
SHA-256: 8f7e8c930cdad38d234294f191288cd8d9d6effc985a6156cfe1268bc18042e7
font_02_sfnt_off0000791a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x791A 16120 bytes
SHA-256: fb7b45e24c28c4473d0ca1c6410c593992d9a809009f9c41b5ae32c9142507dd