Malicious PDF — malware analysis report

Static analysis result for SHA-256 d51759e39cbd3a54…

MALICIOUS

PDF

41.3 KB Created: 2020-08-23 15:42:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b3e49a5455fa7efa4e239692e39d806e SHA-1: e1b5dc533850a79b738325b6a6e66834832b0860 SHA-256: d51759e39cbd3a54a8df5dfb49a9e706468e849f411800a6ac671833a4852e05
194 Risk Score

Malware Insights

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

This PDF contains numerous embedded links, with a critical heuristic identifying a redirector to 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to the same redirector URL. The presence of a large number of external PDF links suggests an attempt to create an SEO link farm, likely to distribute malicious content or phish for credentials.

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=ktva+weather+report In PDF document text
    • http://fujujev.columbuschristianacademy.com/uploads/1/3/1/8/131856666/8144215.pdfIn PDF document text
    • http://tojupi.avisplacechildcare.com/uploads/1/3/0/8/130814579/343cb82584b.pdfIn PDF document text
    • http://gamuke.sojofireproject.org/uploads/1/3/0/7/130776167/48bda1ad87d0.pdfIn PDF document text
    • http://files.authoresstawanabourne.com/uploads/1/3/1/8/131871633/8746092.pdfIn PDF document text
    • http://rijin.lovelifeagain-lifecoachingmore.com/uploads/1/3/0/7/130740013/pekuwaronalatiliviz.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/1/0431/1816/6167/files/wodonifab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1016/1820/files/63161043209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8250/4600/files/jkbose_date_sheet_12_class_private_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xovigaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/82789329533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6676/9054/files/joker_graphic_novel_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4899/2922/files/wegelobovizeladejuzorudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/vunimazokusonutegu.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 5

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_off00006583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6583 4820 bytes
SHA-256: 0904fd71bd6bc18147a8e0594faf6e8f654182eccbb223747e34846a8a1a4d29
font_01_sfnt_off000075f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F7 10228 bytes
SHA-256: d366c3e70a9ddf52e244881d4f95f5e617cf48a593791813277e678106faf791

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