Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f1bbbeee38f6926…

MALICIOUS

PDF

41.3 KB Created: 2020-09-16 17:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74b5357e9820c4068bf000729f9a3f80 SHA-1: 728508788c5449024d591315151d8312095465dc SHA-256: 4f1bbbeee38f69261604e07974427e7028a4d09515b5823e1643b3ff616937fa
184 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.club/wix?keyword=before+we+were+yours+pdf+online', is flagged as a malicious redirector. This suggests the document's primary purpose is to direct users to malicious infrastructure, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.club/wix?keyword=before+we+were+yours+pdf+online In PDF document text
    • http://files.alwaysgetbetterstronger.com/uploads/1/3/1/4/131437295/fopurigiki_femad_vizep_nurikolatuvirok.pdfIn PDF document text
    • http://files.emdreiling.com/uploads/1/3/1/1/131164198/bujosexebopuxumi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8270c65a-9bdf-4155-b18a-acb58c271e91.filesusr.com/ugd/665c20_7f8b1db6395e42a49351024df1d19b79.pdf?index=trueIn PDF document text
    • https://9e1d5619-d6b6-4375-86d6-8a9c18a8703c.filesusr.com/ugd/35c6e2_3790b3ad52ff4f62874d5a7485d70db3.pdf?index=trueIn PDF document text
    • https://7f9588e7-0c22-42be-a49e-e4bb7de34a7b.filesusr.com/ugd/7f614e_46320258bd1f4f3fa78f8f91a111fce9.pdf?index=trueIn PDF document text
    • https://7b26a2e7-bd44-4ff1-86b4-a9fb34fd8628.filesusr.com/ugd/26481d_9a5e245132f04630a57bb8684fbe4945.pdf?index=trueIn PDF document text
    • https://691b7cc2-c7e5-4af7-9ae8-95f664209ceb.filesusr.com/ugd/89064d_7c67132c7ee54f1491c8ea6a883c2e0c.pdf?index=trueIn PDF document text
    • https://5d564158-9874-4f66-8dd5-bb909ce7a13d.filesusr.com/ugd/77941b_e5d8c5253f6740608ef2521eece26be3.pdf?index=trueIn PDF document text
    • https://18c5ff57-493d-4673-be08-78199fed594b.filesusr.com/ugd/1cc777_1ddc26b47f634842878fa7bcac3643f0.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4305/2953/files/patagonigimatiberakiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6372/files/fortnite_chapter_2_week_3_challenges_guide.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_off00006616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6616 5068 bytes
SHA-256: 198bf259a5c55f06a34ad3652ad08fa9095808a507b6c55a6886e5cdec044848
font_01_sfnt_off00007782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7782 9776 bytes
SHA-256: 2741e769ca3f5bb6606d935fa3faab749149c2c9744be845451698b2b2b73ba2

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