Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c4b38da5418e3d3…

MALICIOUS

PDF

45.6 KB Created: 2020-08-12 06:19:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e51c6e2087359e346547fd0a44952c8 SHA-1: d1894f27d6a139fae317875e73514f45062d37fe SHA-256: 6c4b38da5418e3d313d4eb547ee23c8de2e76a21d6b32f477157e41abf90a699
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm and a critical heuristic firing for a malicious redirector, indicating an attempt to lead users to malicious infrastructure. The embedded URL 'https://ttraff.cc/pify?keyword=ascanio+condivi+pdf' is a known malicious redirector. The document body, though heavily obfuscated, contains references to URLs, suggesting a lure for phishing or 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.cc/pify?keyword=ascanio+condivi+pdf In PDF document text
    • http://files.maribellyspartysupplies.com/uploads/1/3/0/7/130776131/6371255.pdfIn PDF document text
    • http://files.edenpchurch.org/uploads/1/3/1/3/131383283/8468300.pdfIn PDF document text
    • http://files.omegambt.com/uploads/1/3/1/8/131856146/9689931.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/1/0432/2135/2606/files/volewisafuwus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/zaximizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7264/2454/files/antimicrobial_resistance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87195604050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8831/3506/files/abdul_hameed_adam_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5966/7363/files/70889407297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/9697231564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3550/9415/files/48812903742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/9245628964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0760/5910/files/83775981845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8036/8796/files/baravosuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0574/7095/files/wilson_stringing_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8559/8615/files/certificado_medico_similares.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1671/5429/files/gedodopubok.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_off00007299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7299 5068 bytes
SHA-256: a708b20f4c7eaaa20024c86c390c94052dfc53a2f7c3ce8357628d3125082a21
font_01_sfnt_off000083ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83ED 11292 bytes
SHA-256: b54cfd9f3fa6f282a04c3cb2840e778748b08023e6b82691310111874cdd1823