Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d1aa14c57880454…

MALICIOUS

PDF

163.8 KB Created: 2021-03-13 22:57:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5e877d8761dde5ac7bac7b551e923f72 SHA-1: 98434150e866aef929ae7202ce606a26f6909315 SHA-256: 7d1aa14c5788045401619c218285ec209eacee40af6bbab9e3a5e0184164f340
126 Risk Score

Malware Insights

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

The PDF document is flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external links, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing lure, likely intended to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 5

  • 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 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://jumiwimov.ru/strik?utm_term=grade+7+math+textbook+pdf+philippines PDF link annotation
    • http://ludoritepiru.22web.org/sony_bravia_tv_apps_free.pdfIn PDF document text
    • https://nivodeweje.weebly.com/uploads/1/3/4/4/134446465/4434f436b83545b.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/weekly_lesson_plan_template_preschool.pdfIn PDF document text
    • https://javufivupa.weebly.com/uploads/1/3/4/3/134349262/mobelisunor.pdfIn PDF document text
    • https://rajezedej.weebly.com/uploads/1/3/2/6/132682549/63793.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/92298589638.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/chaim_potok_the_promise.pdfIn PDF document text
    • https://nifonafepo.weebly.com/uploads/1/3/5/3/135319448/7456840.pdfIn PDF document text
    • http://shopsmmv.site/fruit_ninja_blender_not_workingvyp0j.pdfIn PDF document text
    • http://straponartist.com/643581447653n6pp.pdfIn PDF document text
    • http://austritkfa.com/14578018291wc8pa.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/nephew_meaning_in_english.pdfIn PDF document text
    • http://copyright-services-us.com/26549031939g3iwa.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9eaa565e-fb97-40b4-b096-d6760803f699.filesusr.com/ugd/55e2c6_d56e773f82c642cc807bf12b80285f0d.pdf?index=trueIn PDF document text
    • http://tenowuwewid.epizy.com/fewatuxowimajemusilolude.pdfIn PDF document text
    • https://f1801c53-b3f5-4b94-a9b3-4bb8eb376a66.filesusr.com/ugd/af633f_4227dffd5f324309a4d34a5e6af30b1e.pdf?index=trueIn PDF document text
    • https://29c5b005-6627-40e3-9da1-9f9d3dbc34dc.filesusr.com/ugd/7ad284_b43efaf551c94421983b06b1161f7049.pdf?index=trueIn PDF document text
    • https://cf2e1f24-e5f1-4289-9567-3affce9c164e.filesusr.com/ugd/a4ea6c_ee2a5bd3947243ff866d992e384485b2.pdf?index=trueIn PDF document text
    • https://55d63786-14d6-44de-84d0-33f1fb383c44.filesusr.com/ugd/45fd81_07d6edae21d34a90bc87e415c9928570.pdf?index=trueIn PDF document text
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_ade36ed2f3754cc28b0774ce1b10e38c.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000217ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x217EA 9824 bytes
SHA-256: c5031a16efcc5379ad48164f06206cdcd24646dd77534c8631ff4bde209fe678
font_01_sfnt_off000232a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x232A8 5664 bytes
SHA-256: 427a45109b3032a158023ba1083b7e4e0e410fd2ff6f1c66ed077087c4ebe011
font_02_sfnt_off00024589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24589 6300 bytes
SHA-256: fba9f6d5d467b7d6bbccdc8ac95b73ea8a6825a62cfb156e50cd914bb525142d
font_03_sfnt_off000254e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x254E2 12704 bytes
SHA-256: 16d9cc9a59711bb94db517aa1118794dcbe899ac0a6c49aebdc2fc8d502b9610