Malicious PDF — malware analysis report

Static analysis result for SHA-256 94d016090f5ef5e0…

MALICIOUS

PDF

54.9 KB Created: 2020-09-28 23:26:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1d8b5a79ac6174f85527f2d834fd946 SHA-1: 6a350c49238d4943929fb8dab2c2adb57c3805ab SHA-256: 94d016090f5ef5e0ed82b192d5658da2a4834acaef1b91c0a8a980697180122d
184 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body appears to be malformed or obfuscated, but the presence of numerous links suggests a strategy to drive traffic to potentially malicious or phishing sites.

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://ggtraff.ru/mozel?keyword=diaphragmatic+breathing+relaxation+pdf In PDF document text
    • http://files.taoacupuncturemarin.com/uploads/1/3/1/6/131606727/6440127.pdfIn PDF document text
    • http://files.wroeh.org/uploads/1/3/2/7/132712661/nirazan_somebonu.pdfIn PDF document text
    • http://gedewegib.audia2dp.com/uploads/1/3/2/3/132303388/fefixadakepit.pdfIn PDF document text
    • http://files.elfiesrefuge.net/uploads/1/3/2/8/132814071/338ead42a92553.pdfIn PDF document text
    • http://debis.unlockyourheart.com/uploads/1/3/2/6/132682327/115395.pdfIn PDF document text
    • http://gebagegul.methylationassociation.com/uploads/1/3/1/0/131070364/6661122.pdfIn PDF document text
    • http://files.thecoloradoimaginarium.com/uploads/1/3/1/4/131453230/2909221.pdfIn PDF document text
    • http://files.srepto.com/uploads/1/3/1/0/131070912/34ba4.pdfIn PDF document text
    • https://site-1036754.mozfiles.com/files/1036754/83564598482.pdfIn PDF document text
    • https://site-1036820.mozfiles.com/files/1036820/femawivinejaf.pdfIn PDF document text
    • https://site-1036969.mozfiles.com/files/1036969/xowezijomazelesofotema.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4f427d8b-6023-4233-879b-34c2b6ab9574.filesusr.com/ugd/469aea_b19f9ebe501c4aedadff4e157c663391.pdf?index=trueIn PDF document text
    • https://425ab7ba-b0e7-46fb-b1e4-ac4bb5c1536f.filesusr.com/ugd/24deb6_ab665b08561942fa937cac7d7fc62085.pdf?index=trueIn PDF document text
    • https://1ec458e3-f3c0-4459-9505-33fc20d42f05.filesusr.com/ugd/f08e01_3c9f2451ad474753add00acc6cbd5951.pdf?index=trueIn PDF document text
    • https://962d38b8-0a0e-4222-b164-36fb887a5c84.filesusr.com/ugd/01bc73_6c37808938bc46fdb3188842d2aaaa5c.pdf?index=trueIn PDF document text
    • https://a5c67e9b-5a58-4f98-96c4-86aee4bf20c4.filesusr.com/ugd/05900a_b497c2ea6ab94ce78728e5c263fe43d7.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

Related samples 8

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_off000098be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98BE 5600 bytes
SHA-256: d0575e682f43b95c9e89da254112e3d9d0f274c79a12df85529d12804b49c14e
font_01_sfnt_off0000aba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABA8 10196 bytes
SHA-256: a61cdadc88c983f997d313df17ae548965cde7df93fb0a1931713f8ca3efb765

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