Malicious PDF — malware analysis report

Static analysis result for SHA-256 038bf445a45b788e…

MALICIOUS

PDF

59.1 KB Created: 2020-08-08 21:16:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d1d9156d491977255da87ee1b62ff14 SHA-1: ca5ff2318f0db2fd3b094f61de66ff43b102584b SHA-256: 038bf445a45b788ed6fb0215e12738c1a2fd4ab4be6597888c2c36aabeef9d55
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, indicating a likely phishing or scam attempt to redirect users to malicious content. The ML classifier strongly supports the malicious verdict.

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=avant+garde+in+literature+pdf In PDF document text
    • http://files.itistheend.com/uploads/1/3/0/7/130739564/rurapigalojuwa.pdfIn PDF document text
    • http://wibali.naturalbathandbodycare.com/uploads/1/3/2/7/132712615/4176697.pdfIn PDF document text
    • http://files.gospeladvanceny.org/uploads/1/3/1/8/131872238/buzos.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/1/0437/3633/4488/files/61302135935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5080/2081/files/wufoweluxud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5305/5128/files/swka_angielskie_poziom_b2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3029/0327/files/donigeserigigex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6385/7572/files/manual_sprinkler_valve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6562/9077/files/table_border_css.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/45450596021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/somerurunem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0985/9999/files/zekisumerigowuzibad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7555/0876/files/77662493248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1217/7572/files/1-_375_tailoring_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9932/4567/files/zaxuses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8988/files/nordictrack_ctx_910.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_off0000ac45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC45 5080 bytes
SHA-256: 2b6a58e913fc987175f6754dcf0bc77ae28f7d8165794450652b0c822995dea2
font_01_sfnt_off0000bdae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDAE 10008 bytes
SHA-256: 11aa0254d61ee21163bb9a3b9838d9508e1615f20751ffad5ec7e59037094a12

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