Malicious PDF — malware analysis report

Static analysis result for SHA-256 f52533e6d2da2952…

MALICIOUS

PDF

43.2 KB Created: 2020-09-29 21:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b07100cc915a27a179424d2d9f74501b SHA-1: 5056e3ae0dd887f86c6e00605bc70d015fbf2789 SHA-256: f52533e6d2da29520c3febc940040725830237db8f0a36660da73c714dbac645
184 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and heuristics suggest a lure impersonating a cloud document service to trick the user into clicking the malicious link. The primary malicious link identified is https://gettraff.ru/strik?keyword=cnet+download+pdf+reader, which likely serves as a gateway to further malicious content or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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://gettraff.ru/strik?keyword=cnet+download+pdf+reader In PDF document text
    • http://vaniror.agshield.com/uploads/1/3/1/4/131407178/3768584.pdfIn PDF document text
    • http://tubawo.carysjonesscenicpainter.com/uploads/1/3/0/7/130739783/kipixamobudexav.pdfIn PDF document text
    • http://pixawa.sandlotwesterville.com/uploads/1/3/1/6/131637881/e8ee6.pdfIn PDF document text
    • http://files.livealifeofservice.org/uploads/1/3/1/8/131856646/7f66c3c053f5b16.pdfIn PDF document text
    • https://site-1036911.mozfiles.com/files/1036911/gitubuvipa.pdfIn PDF document text
    • https://site-1037253.mozfiles.com/files/1037253/wibejumakizazugigelepexiv.pdfIn PDF document text
    • https://site-1036838.mozfiles.com/files/1036838/wanevepamewidifofomovaf.pdfIn PDF document text
    • https://site-1037111.mozfiles.com/files/1037111/xigimudelefupoj.pdfIn PDF document text
    • https://site-1036935.mozfiles.com/files/1036935/voferugubovuv.pdfIn PDF document text
    • https://site-1036655.mozfiles.com/files/1036655/88220647338.pdfIn PDF document text
    • http://gubumo.hifacestudio.com/uploads/1/3/1/3/131379070/5308bf87055df8.pdfIn PDF document text
    • http://nikuri.ennstech.com/uploads/1/3/1/4/131453150/3897592.pdfIn PDF document text
    • http://morev.harunaflute.net/uploads/1/3/2/6/132681927/kigoridiji_bupevirosorisu.pdfIn PDF document text
    • http://files.sbelart.com/uploads/1/3/2/8/132814505/jowalinil_tomumegulefaf_metamosegagok.pdfIn PDF document text
    • http://rozezes.swinhopelabradorsandgermanshepherds.com/uploads/1/3/2/7/132740813/9600933.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00006cc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC0 4856 bytes
SHA-256: b513df445ab6a1bf4f462004d5030d6d7ad8e258630e931c446c0e36034daa8b
font_01_sfnt_off00007d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D61 10152 bytes
SHA-256: 694e532a5ce2f7afb5b8324675deec70aa8067559d63b5e1b66d2768ad904bbe

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