Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e1f359be5b4ab0…

MALICIOUS

PDF

52.6 KB Created: 2020-08-22 15:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d576c9be6c839948373b5c07dc3ae239 SHA-1: 39a31a31409afcf42914c17b4815df407511d728 SHA-256: 75e1f359be5b4ab0d2c10b4c1d2acf183a8c9ed1640657f4b4c26b1dd276b2cb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL associated with a link farm and redirector. The document body, though heavily obfuscated, contains a reference to the malicious URL, suggesting an attempt to trick users into downloading potentially harmful content. The ML classifier strongly indicated maliciousness.

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=camilo+cienfuegos+biografia+pdf In PDF document text
    • http://files.samanthastewartofficial.com/uploads/1/3/0/9/130969440/xarisug.pdfIn PDF document text
    • http://jovavevo.thegospelchick.com/uploads/1/3/1/4/131437423/zupusat_zixejoweputule_tibufazadarepez_mabelidik.pdfIn PDF document text
    • http://xisipo.fear-to-faith.com/uploads/1/3/1/1/131164250/naxukun.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/1/0429/4184/1571/files/hyundai_accent_2020_workshop_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0971/2021/files/karthika_puranam_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0895/8362/files/87304298690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9693/2505/files/55909814787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5415/3371/files/75602562712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2753/7828/files/19754188950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/wolobow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6839/1577/files/bjp3_self-_check_5._1_whileloops.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4371/6262/files/tibivefob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/redukenedobitaguwowok.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008bad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAD 5520 bytes
SHA-256: b20ac12543b1bd40bab6a88a2609f7186c7f7b4a08e0627eb210ca27fcf11cf8
font_01_sfnt_off00009e4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E4F 11744 bytes
SHA-256: af3a5356d6fb3b90ade433844e3700aa6daeb76a3c797fff5681f03a95ea2a06

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