Malicious PDF — malware analysis report

Static analysis result for SHA-256 305fbf75e5a12d7f…

MALICIOUS

PDF

39.2 KB Created: 2020-08-22 08:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 39ba95c8af408589dd443fb7d8d54bd1 SHA-1: 4ab3641cef1198034eba038b74f117f01dff7a59 SHA-256: 305fbf75e5a12d7f17254578fd9fdb724626c4afaf635d9d5dbd5bcaeb3243c6
194 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, https://ttraff.cc/pify?keyword=disciplinary+hearing+charge+sheet+template+south+africa, is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a 'disciplinary hearing charge sheet', suggesting a social engineering lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination. The ML classifier strongly flagged this PDF as malicious.

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=disciplinary+hearing+charge+sheet+template+south+africa In PDF document text
    • http://files.astepaheadmusicaltheater.com/uploads/1/3/0/7/130775432/20cb91.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/1/0430/9005/1221/files/77797185611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5044/2652/files/noniwefafozilirutupol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8211/9323/files/ruxezexoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1262/0447/files/41069848986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2260/4695/files/46898890600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9792/2461/files/72380961847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/elsword_apsara_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4189/1238/files/98738219967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1860/files/43342702756.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A2C 5528 bytes
SHA-256: 34bf062a060c0d1fc2045dee2c2f8f6f24036728bd8b1768db4584e4c49ee221
font_01_sfnt_off00006cd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD7 10388 bytes
SHA-256: de3aba66a9cc37b1c1761bf6f41aed723e9241448b93db180c510fc18479ad48

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