Malicious PDF — malware analysis report

Static analysis result for SHA-256 0af89556da2d6a2d…

MALICIOUS

PDF

36.9 KB Created: 2020-09-19 04:56:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10c5318abfbbe3118871eb67be4a192c SHA-1: 2fae4cf34441d8e6d02995cdadab42e8b25f8e7d SHA-256: 0af89556da2d6a2d98e62fb2d1cad62e514a8f502232b49561ce88784aec74f6
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a large number of embedded links, many of which point to disposable hosting and are likely part of an SEO link farm. One critical heuristic identified a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document's primary purpose appears to be to distribute traffic to potentially harmful or spam-related websites.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.link/pify?keyword=denver+public+library+hours+smiley In PDF document text
    • http://gugub.axems.com/uploads/1/3/0/8/130814328/1d684.pdfIn PDF document text
    • http://dumupepox.marcelareyes.net/uploads/1/3/1/4/131437359/nodanopefefoledizuko.pdfIn PDF document text
    • http://files.onyxfuneralplanning.com/uploads/1/3/1/8/131856039/9b99c4fbd259d.pdfIn PDF document text
    • http://files.aanenetwork.org/uploads/1/3/0/7/130738812/354516f166d.pdfIn PDF document text
    • http://ridevos.dsbcyouth.org/uploads/1/3/0/9/130968926/4606688.pdfIn PDF document text
    • http://kezapo.danathomasevents.com/uploads/1/3/1/3/131381924/48304.pdfIn PDF document text
    • http://files.piommiami.org/uploads/1/3/1/4/131454581/b1ab428b.pdfIn PDF document text
    • http://pamix.wynedesygns.com/uploads/1/3/0/8/130814085/luzorupebilofut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0464/8039/2344/files/57909570534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5025/3984/files/xiaoli_guo_fsu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/8130/8829/files/best_masticating_juicer_2019_consumer_reports.pdfIn PDF document text
    • https://381326b8-b825-4e95-b417-d36b945c8d39.filesusr.com/ugd/bbdb65_e6f74b70485744e4a4fb1aeca053c618.pdf?index=trueIn PDF document text
    • https://dd29f6f3-9f1d-4322-a2d2-72217caecfe0.filesusr.com/ugd/7ea8bb_df3c2524ffa146bbb82231ee61de5328.pdf?index=trueIn PDF document text
    • https://ad205261-342d-492f-a39c-add21c049f80.filesusr.com/ugd/0baf77_5eef4b22924e4b18af3c570aa287e7f4.pdf?index=trueIn PDF document text
    • https://55b0b90c-1f2f-4be5-86e6-8cc65db0c3d2.filesusr.com/ugd/dcf311_456f3a37c7fc454f81d2b566fdfaddc3.pdf?index=trueIn PDF document text
    • https://e2abf1d4-9a0e-450e-8ecd-9761106c3f62.filesusr.com/ugd/e32576_088f72b950a14e649cbfd309bca71803.pdf?index=trueIn 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4493 5276 bytes
SHA-256: d4017733c2171ee930638a3f156937909828b295193f0eac511407f2006de704
font_01_sfnt_off00005653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5653 10012 bytes
SHA-256: 0aede48da22d2b45fc752ab70124186ac7e0a34a3d266dc09c8c1d03678b119b
font_02_sfnt_off00007873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7873 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e