Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4bc4b6fee14d467…

MALICIOUS

PDF

43.3 KB Created: 2020-08-11 23:24:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8575682fd1c5aa6c9d124c419820074c SHA-1: 06aa799884401b3e1737bf3a92ed699b01bc62df SHA-256: c4bc4b6fee14d467ba4f87cc75be9e6bdf3446bb0e521f288440672c03b75c12
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the malicious URL 'https://ttraff.ru/pify?keyword=manejo+absceso+hepatico+pdf'. This suggests the primary intent is to lure the user to this malicious site. The presence of numerous other links, many hosted on Shopify, indicates a potential link farm or SEO poisoning tactic to distribute malicious content.

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=manejo+absceso+hepatico+pdf In PDF document text
    • http://files.studiobarcelonamke.com/uploads/1/3/1/3/131380236/1139269.pdfIn PDF document text
    • http://tumigireg.thirdcoasthealth.org/uploads/1/3/1/3/131384424/vujujiluzi.pdfIn PDF document text
    • http://files.votelogan53.com/uploads/1/3/0/7/130739081/tobigerevezowademu.pdfIn PDF document text
    • http://files.evartchamberofcommerce.com/uploads/1/3/1/6/131606480/6070916.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9997/8904/files/25799765970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/foreach_object_javascript.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8602/0761/files/bumenovug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/jajusutov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/coping_cat_therapist_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7691/0242/files/82948662134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/546173703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1193/8216/files/kiwimixezawovonesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2033/2705/files/nalugumevabokudirutipekij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0821/9547/files/7711902581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3617/1688/files/english_grammar_tenses_book_free_download.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 7

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_off00005bf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF7 5124 bytes
SHA-256: 1255b63279b6f83d9c9a5e9fa5e7ef3663648cdab5815b22d1789c1ba3db4765
font_01_sfnt_off00006d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5F 11280 bytes
SHA-256: 3dace019e939be8e414b35dd8cca7312eacdbe746cdde5aa8fa5fdb04849a0ce
font_02_sfnt_off00009233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9233 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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