Malicious PDF — malware analysis report

Static analysis result for SHA-256 5684ccc5ba77064d…

MALICIOUS

PDF

42.8 KB Created: 2020-08-15 05:39:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2762cf41467b69c6c6a65cd25269ad4a SHA-1: 306b673e8d96fad6a5f991fd4b81c2c13f423bb2 SHA-256: 5684ccc5ba77064d1ef808ee28da629c3cde9bae0d06b3f0eac0a43de2b763f3
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector, suggesting a lure to a phishing or scam page. The ML classifier strongly supports the malicious nature of this PDF.

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=optimizepress+checkout+page+template In PDF document text
    • http://files.m-w-consulting.org/uploads/1/3/1/3/131381095/kifuwejadagef.pdfIn PDF document text
    • http://jarof.akchristiantraining.com/uploads/1/3/2/3/132303189/tunatekiwivel.pdfIn PDF document text
    • http://rudoj.cloquetjuniorsvolleyball.com/uploads/1/3/1/0/131071220/2001797.pdfIn PDF document text
    • http://files.global-migration-of-african-cuisine.com/uploads/1/3/2/6/132681880/6647935.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/1/0427/7387/2807/files/minecraft_hour_of_code_level_12_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0840/1306/files/49687588153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8900/2645/files/xidadigugovulivijej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5503/7093/files/69824192042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7586/9599/files/tagekesevefij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3957/1616/files/mozenadezoxofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/1302092800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/tozolim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/runiwim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5090/7286/files/zozejipuwinaregadiram.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 8

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_off000067c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C3 5488 bytes
SHA-256: 854ad1e90cd0a804ddff33a7415726c9abe4f660a421459488798feb4a777420
font_01_sfnt_off00007a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A50 10588 bytes
SHA-256: eca213c581700a1f7f7c9e7b29f8b7a07181497d5a541efcc5bc0ffe0fd7dcba

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