Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d03adf40dabfe06…

MALICIOUS

PDF

85.5 KB Created: 2020-07-28 22:16:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d9b3ebff861023c5255887383014ae1 SHA-1: e008d800a1e887af6489264291f1b3475822ff3c SHA-256: 6d03adf40dabfe066d92b744cd0b9a8091e2ddeb22257b90ef7767ce32d2ec2f
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to redirector infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate that these links are part of a malicious link farm designed to lead users to potentially harmful content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of malicious links suggests a phishing or malware distribution attempt.

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=limbo+guide+warframe+2018 In PDF document text
    • http://files.matthewjacksonart.com/uploads/1/3/1/0/131070192/853b3b9b8.pdfIn PDF document text
    • http://files.kil-n-it.com/uploads/1/3/2/8/132815318/1950599.pdfIn PDF document text
    • http://files.balletclassique.net/uploads/1/3/0/7/130739747/3337450.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/1/0432/4448/6824/files/84308048973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/jireja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8267/8433/files/zuzajebixuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1247/8360/files/pivufodovaxonomadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/95407155367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9276/2006/files/32726909408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/93755686568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7906/6009/files/57379774099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7218/2685/files/81555091049.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_off00010ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF9 5404 bytes
SHA-256: 12b7bc74d2627303b28e82bf514922452f813210f6b7ab537222dc8986869cfb
font_01_sfnt_off0001226b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1226B 11812 bytes
SHA-256: 6fbf501add3ce439eb55845c3282330a9f70788a0091bb1f5792e20b3deb259f

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