Malicious PDF — malware analysis report

Static analysis result for SHA-256 26b67828861b7dbf…

MALICIOUS

PDF

54.0 KB Created: 2020-09-20 19:08:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c5eaa16c642d182f50e41aeaf7ade018 SHA-1: cff44c7fc9b60c768dbc4be105139de7ed0465fe SHA-256: 26b67828861b7dbf0a1575b52a711249ea335bb466afc8c70572d893d8a483e5
184 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the PDF is designed to redirect users to malicious sites, likely for phishing or to download further malware. The ML classifier strongly supports the malicious nature of this PDF.

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/wix?keyword=compton+dr+dre+full+album+stream In PDF document text
    • http://pexabewis.sophie-eleanor-photography.com/uploads/1/3/1/3/131384082/biroxotebot.pdfIn PDF document text
    • http://files.leespawsandclawsshelter.org/uploads/1/3/0/8/130873997/gokuvefizodopimutaxa.pdfIn PDF document text
    • http://gagekub.tacklingsuccess.org/uploads/1/3/1/3/131380550/1f10564018748c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a05fb497-41ba-488b-8cfd-28572f536fab.filesusr.com/ugd/e2c223_4e16e8714234437794bf69b63d8c2f54.pdf?index=trueIn PDF document text
    • https://e2a741c9-80ad-43c5-8bb5-c01352fb9713.filesusr.com/ugd/98857b_fb1bc98a6bd749d4a1e7f6851d4440b3.pdf?index=trueIn PDF document text
    • https://ca0e3298-a8a5-4f5e-afbb-67f3a8b99fbe.filesusr.com/ugd/930050_1c21ab0e10104fbe933e1fa1fe8b4b6a.pdf?index=trueIn PDF document text
    • https://f5c34651-5317-4a8e-b6c1-2701083b5930.filesusr.com/ugd/1be480_ace3f5e3564041929b7362f0758ddaba.pdf?index=trueIn PDF document text
    • https://7ad21bca-7da7-42df-bea0-c973d4baa06e.filesusr.com/ugd/1be480_5593693084b3403795e911f8885c645b.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0358/4423/files/xiduzozexudasozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/foxinuxagox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/james_leveling_guide_50-60.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 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_off0000941b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x941B 5232 bytes
SHA-256: bc48f440358d6932a97a386b24ee386194acb1f96ec1f4bdfa9fd230b05d397b
font_01_sfnt_off0000a5c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5C5 10908 bytes
SHA-256: 625aaabda7dfd233c1a672e12fdfac39369e92a3efcc3ce948cf1c3fbc72f1d6

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