Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a8de1e1c6544e87…

MALICIOUS

PDF

33.6 KB Created: 2020-08-07 19:10:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c8a42d088f799471d556347a6b063091 SHA-1: 86feefaba67c2dda6148e623c8573214383e3b57 SHA-256: 5a8de1e1c6544e87997bccc4a293f69a551d60fe4f4f619a2baa7a76e5a21404
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing lure. The primary redirector URL is identified as malicious. The document body, though heavily obfuscated, contains the malicious URL and benign-looking PDF filenames, suggesting a social engineering attempt to trick users into downloading further 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.cc/pify?keyword=you+hurt+me+pdf In PDF document text
    • http://files.bpcrane.com/uploads/1/3/1/4/131453151/migawexuza.pdfIn PDF document text
    • http://files.selindoalpha.com/uploads/1/3/1/3/131379567/nubewarer-lubutatalolape.pdfIn PDF document text
    • http://files.ridgehockey.net/uploads/1/3/0/7/130776046/24544ef158e.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/1/0428/9835/8432/files/46391305542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3343/5029/files/53598588995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2887/9272/files/medical_and_surgical_asepsis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/35677017338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/vikuvag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4962/1406/files/panaxojivoboxazufozar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/82330972397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6163/9318/files/25839213570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1519/1202/files/kosevimanurepawagojurim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/35346139588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/bobujizurev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/faxovuvewobozazanege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/spider_man_comics_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xasaxikopakepiditewevumub.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 4

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_off000048d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48D2 4824 bytes
SHA-256: 4594b13f8c8719ea4ae7f84610f797d0b31f2adca59cd54ef295ef5a115f7ccd
font_01_sfnt_off0000590d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x590D 9612 bytes
SHA-256: d47725aaa6909d28f458939cf747b1f93f545182ecaeceaf10ac90c908a5faea

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