Malicious PDF — malware analysis report

Static analysis result for SHA-256 8599e3e6f12d689e…

MALICIOUS

PDF

42.0 KB Created: 2020-08-10 17:18:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 272b544e8105d4f3c4dd4bd2d6766838 SHA-1: c7c149b725d7a521841ed92a670c683a93a79e8b SHA-256: 8599e3e6f12d689e357f4a1594ac7ef1fb0f96e4d37d987ec03ce5834cfbaa63
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains URLs that are part of this link farm, suggesting a phishing or scam attempt to redirect users to malicious sites. The ML classifier also 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.com/pify?keyword=analisi+logica+pdf In PDF document text
    • http://files.theauctionofmanythings.com/uploads/1/3/0/7/130775734/meboguripe.pdfIn PDF document text
    • http://files.bluecarpetcorridor.org/uploads/1/3/0/7/130739713/raduni.pdfIn PDF document text
    • http://files.debistrong4peacehopelove.com/uploads/1/3/0/9/130968921/01f7e300c72.pdfIn PDF document text
    • http://files.thedumplinglady.com/uploads/1/3/1/6/131607075/tixujumag.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/1/0429/8362/0767/files/tillich_systematic_theology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5235/1144/files/wegopuzofefuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/86012914964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8863/4266/files/33009520807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/crf50_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/tanedexorit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9889/8592/files/dazuvimibejoronebifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zilifevuzumojewod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/28978440265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/vavubibus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/capacity_of_parties.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/48973072922.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_off00006621.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6621 5216 bytes
SHA-256: 7d645bccb14d4d620f38e3b9bdb1a31616c087f5e782f390ef694c5e3254dfda
font_01_sfnt_off000077f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F1 10956 bytes
SHA-256: f5f4f25953b5d6e0bb8c4d661e4f52a75c976a71109a5d387174a8d5350945c1

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