Malicious PDF — malware analysis report

Static analysis result for SHA-256 053e13dbbb9f8b04…

MALICIOUS

PDF

70.2 KB Created: 2021-03-06 00:05:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: aff1d66dc8ee66648833ccb7f50ebcc4 SHA-1: a396b38f9ee99e34fbe30bfa7f3fc08b74e4a539 SHA-256: 053e13dbbb9f8b0411dce87a09151d2b68944e7936642bb0ed7c829b4ce03210
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to host and distribute second-stage payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://dugedepap.ru/strik?utm_term=audio-technica+at-lp120+usb+manual+direct-drive+turntable PDF link annotation
    • https://zoluwapipapak.weebly.com/uploads/1/3/5/3/135321816/53240fae.pdfIn PDF document text
    • http://koteyarn.moscow/what_is_the_moral_of_the_millers_tale9v9w1.pdfIn PDF document text
    • https://kuxokovu.weebly.com/uploads/1/3/0/7/130738635/3340e7cd82e97ae.pdfIn PDF document text
    • https://dulipitigisol.weebly.com/uploads/1/3/4/7/134717891/bojepejekisuwip_lojogojinimiwe_fejurunit.pdfIn PDF document text
    • http://lujefepoma.iblogger.org/wavijotozefetogovifel.pdfIn PDF document text
    • http://mezajozugabaso.getenjoyment.net/92660066218.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/11718501761.pdfIn PDF document text
    • https://tijoteveduno.weebly.com/uploads/1/3/4/8/134853829/gapevodedibosasirali.pdfIn PDF document text
    • http://air-calm2.club/bootstrap_form_input_stylesm3bj2.pdfIn PDF document text
    • https://gizituxozofu.weebly.com/uploads/1/3/5/3/135303534/8c4d1bd80.pdfIn PDF document text
    • https://muxolebutelun.weebly.com/uploads/1/3/2/7/132741382/wikafatulemut_kawisumotuzaz_ruxubaso_didajudo.pdfIn PDF document text
    • https://zukodefikarux.weebly.com/uploads/1/3/4/4/134498552/nugawidarifiporisode.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mopunetite.epizy.com/bootstrap_4_tutorial_franais.pdfIn PDF document text
    • http://wizifaj.rf.gd/25085452178.pdfIn PDF document text
    • https://6a9ecc2b-05c3-4056-8705-773ae6be8cdd.filesusr.com/ugd/7a359d_881645a4ea5448c780358f9c817089d1.pdf?index=trueIn PDF document text
    • http://dirazonun.myartsonline.com/23563017068.pdfIn PDF document text
    • http://digifasofow.rf.gd/auslogics_boostspeed_10_crack.pdfIn PDF document text
    • https://8dfdba76-182f-4dc4-9dda-37a8c8d09dc9.filesusr.com/ugd/4ae4db_a25e292e7dd84db183515f89c43cff8c.pdf?index=trueIn PDF document text
    • https://b3709dad-42f4-4621-9b7e-74d31ca978cd.filesusr.com/ugd/f91cf1_e77b4344919e49dead49920e4735fd41.pdf?index=trueIn PDF document text
    • http://rupufunolodul.rf.gd/nesco_electric_pressure_canner_recipes.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD208 5860 bytes
SHA-256: 8ea1c8602e1fd262593cf7ff9735e144f41f4a12ffc40f9c60ff805f4bb77dec
font_01_sfnt_off0000e5d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D5 11016 bytes
SHA-256: f901f35b6609d78165b578db7a435a10856ac48bf40ee2a01629879a7d587736

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