Malicious PDF — malware analysis report

Static analysis result for SHA-256 599a32bc68ff0a73…

MALICIOUS

PDF

37.7 KB Created: 2020-08-04 22:51:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d1d6c9abb0d951114a9521dc7766f062 SHA-1: 65e20dd8e09ffee9961c2af8d4cfa06564a1b33b SHA-256: 599a32bc68ff0a737ed7ce3c6ffc00d990b61839c8e7fd0e1d21ea20055ef8c0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, also contains the same redirector URL, suggesting a lure for free downloads that likely leads to phishing or malware. 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=geomorphology+by+savindra+singh+free+pdf In PDF document text
    • http://files.masterchefoneill.com/uploads/1/3/0/7/130739971/d3187e3e5.pdfIn PDF document text
    • http://files.allan69.com/uploads/1/3/1/3/131380158/9394661.pdfIn PDF document text
    • http://zavopu.pahasapagrotto.org/uploads/1/3/1/6/131636725/50491.pdfIn PDF document text
    • http://files.jambandpurist.com/uploads/1/3/1/8/131856365/76af5249.pdfIn PDF document text
    • http://files.exclusivedancerecruitment.com/uploads/1/3/1/4/131412235/7448305.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/1/0428/6827/7415/files/26930710794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/leromurama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6353/3977/files/suvifixaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/28574590424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12247178291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/bidaroke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2663/5157/files/vapopesukowoxomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/56055751419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5038/6086/files/6866437295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4874/7676/files/19243562702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7901/5327/files/71545403928.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_off00005236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5236 5788 bytes
SHA-256: 99b80207ac8e66cbaa1f59c7a5266afcc8ff59b6120fe2f018d1aa7bef62bfc2
font_01_sfnt_off000065c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C6 10596 bytes
SHA-256: 8bd2f2840d622e6177a37933f4145ab75fde5ab4dc38a08695b245e517169a4d

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