Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d0dbb76580e85ce…

MALICIOUS

PDF

40.6 KB Created: 2020-08-14 02:51:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: abdcc79c69516835dad018e45d4af164 SHA-1: 4de7d51ffbe1b26de7e7ced2a7f4634bcbb1a8eb SHA-256: 3d0dbb76580e85ce7fb92b59790eeda8fe1a01fbca02bb5de85d330d2c1d9546
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external PDFs hosted on various domains. One prominent link, 'https://ttraff.com/pify?keyword=english+worksheets+for+grade+6+online', is identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'English worksheets for grade 6 online', suggesting a lure to disguise the malicious intent. The presence of numerous external links and the identified malicious redirector indicate a link farm or SEO poisoning attack designed to drive traffic to malicious infrastructure.

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=english+worksheets+for+grade+6+online In PDF document text
    • http://fokem.drdavidshallenberger.com/uploads/1/3/1/3/131398140/lerugosinax-sakikesite.pdfIn PDF document text
    • http://files.tlcgardensandcrafts.com/uploads/1/3/1/8/131871494/savirudirezazazani.pdfIn PDF document text
    • http://files.helenkaufmann.com/uploads/1/3/1/4/131406369/migezuvib_zenutibulawet_bodorem.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/1/0439/9919/9390/files/jumon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6694/7744/files/livoripo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4453/6473/files/ryobi_18v_weed_eater.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4500/1115/files/5209618967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8439/8236/files/capitalism_and_freedom_friedman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4642/files/57943148379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/16665289693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6182/0054/files/59263273642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8036/5720/files/38262752199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2352/7070/files/how_to_download_viewer_in_jio_phone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/11486257049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3848/7206/files/all_decenders_seeds.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 3

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_off00005ff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF3 5436 bytes
SHA-256: c61c1414c39af565661241fee6ee0d4f94c28583d1f039155e724a89885ec0dd
font_01_sfnt_off0000727a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x727A 10328 bytes
SHA-256: 76d8aecdb04a64a573fc4d63a6c0136581cccad16d30c22f479c8d64f8e00601

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