Malicious PDF — malware analysis report

Static analysis result for SHA-256 329d8a28eda4b93d…

MALICIOUS

PDF

42.9 KB Created: 2020-08-14 03:53:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6381652d03a21616c19330853cdc2d7f SHA-1: 26baea02b5c9373da7d5647a7814cf8e43dfdc96 SHA-256: 329d8a28eda4b93d15fd405209e07ece150aa6754ceee9d21f257d18fe211b1d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wb?keyword=simplifying%20rational%20equations%20worksheet', which is also flagged as malicious. This suggests the document's primary purpose is to redirect users to malicious content by masquerading as a worksheet.

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/wb?keyword=simplifying%20rational%20equations%20worksheet In PDF document text
    • http://ridevos.dsbcyouth.org/uploads/1/3/0/9/130968926/4606688.pdfIn PDF document text
    • http://files.cedarcreeksculptures.com/uploads/1/3/0/8/130813841/4059053.pdfIn PDF document text
    • http://dobaxad.nataliajezova.com/uploads/1/3/1/6/131607095/2042755.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/1/0431/7777/1164/files/37470449445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/rivumamikopumajokoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/zuwulejidakavitoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7930/2296/files/finadedobelesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3050/2806/files/leveganuvogimutofofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2018/0894/files/83298598435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7624/7967/files/23023653369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/gogezijufibirowefobexod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9518/5824/files/d_d_hobgoblin_race.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/valoropowife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4074/3330/files/kumidewabifujo.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
🗂 Part of campaign: onyxfuneralplanning.com 5 samples

Related samples 1

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_off00005e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9B 5800 bytes
SHA-256: d9ae3abca47635c94b07b84d1d44fe3230d573b13e7785a1d4012705f1d5ccbd
font_01_sfnt_off00007249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7249 13972 bytes
SHA-256: 2be8378506048381a151ee7220503434d3e5671f1e403f2bce9363c44400460b

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