Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d6800d3a21848c9…

MALICIOUS

PDF

32.3 KB Created: 2020-08-01 08:00:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a961eb4ebf41d65418d2bf43175ecae SHA-1: abdf9cb52d37685d8b920c2352dc859245933b11 SHA-256: 6d6800d3a21848c92a6ce0d59d83994ea5d5e34fd75c7d42e84f6e632935c1df
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to redirector infrastructure. The primary redirector URL, 'https://ttraff.com/pify?keyword=brickleberry+full+episodes', suggests a lure for free content, likely a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple SEO-linked PDFs indicates a link farm strategy to distribute malicious content.

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=brickleberry+full+episodes In PDF document text
    • http://files.grndcntrlmag.com/uploads/1/3/0/7/130738876/dibepapiw.pdfIn PDF document text
    • http://files.disquieteddreams.com/uploads/1/3/1/4/131407493/b5b5e6cf34.pdfIn PDF document text
    • http://files.mylifeintechnicolor.com/uploads/1/3/0/7/130775565/65ea9c4.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/1/0428/4681/4374/files/12438740310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6818/6015/files/51867320818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8879/8111/files/foxidenezafuxuvifuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2960/2205/files/mokubuwitalelariva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3377/8597/files/fimimasisatudopiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/66600410568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/sukekixinaxonuwatubanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/27896870078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5479/1846/files/45290060818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4331/5102/files/91565648152.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 2

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_off0000415d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x415D 5296 bytes
SHA-256: a414d50a33b09d34091460901c1f6d2fa8e5b0acd5ebb2f8ddb6e7abe2a51afa
font_01_sfnt_off0000537b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x537B 9052 bytes
SHA-256: 0d397aeb5e6a3cee7790759b9b72653b1b370f48b21dcdb10a6cc89fea404432

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