Malicious PDF — malware analysis report

Static analysis result for SHA-256 6289f8da16333366…

MALICIOUS

PDF

50.0 KB Created: 2020-07-25 11:39:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ad00bf367206b21b3557c764b070b15 SHA-1: 5fed51d36898f789e8da83ecdbd22fd23503e436 SHA-256: 6289f8da16333366000aa56f44b9bd53c2b310b6581d1d2d54eafb232bb3b07b
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including a redirector URL, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The presence of numerous PDF links suggests an attempt to create a link farm for SEO manipulation or to distribute malicious content. The document body, though heavily obfuscated, contains references to 'Mozilla firefox focus' and 'wkhtmltopdf', which may be part of a lure.

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=mozilla+firefox+focus In PDF document text
    • http://files.ortegaartstudio.com/uploads/1/3/1/4/131453610/xuwiwunu.pdfIn PDF document text
    • http://files.varsity-prep.com/uploads/1/3/0/8/130874544/4f648.pdfIn PDF document text
    • http://files.carolgrice-curran.com/uploads/1/3/0/9/130969498/f3592f10080e4.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/1/0432/7027/5237/files/xoriraza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9592/4640/files/solaguzodifosokokatatile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/60465783772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/17716211898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/feromarimozoruwizaguwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5824/2470/files/ludodilomipetitep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8475/8696/files/66647998734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84770620138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1941/9291/files/mefojapilosatizamekek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/segebuwasisubokaxi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7204 4692 bytes
SHA-256: 838f775200a552620fd04b549336b54436a9b9e06fe7ad709a9ee0da9b2e424b
font_01_sfnt_off0000821c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821C 10668 bytes
SHA-256: dee025dbdbef5a212a0bbce191967568f890485203f18dacb02963ee270d9ce4
font_02_sfnt_off0000a5d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5D5 16164 bytes
SHA-256: d781c508aaf473e50263a6aabc3f4161b7fa10724c54bb8d35addee38a7f1c44

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