Malicious PDF — malware analysis report

Static analysis result for SHA-256 e337a8af3dba9fd1…

MALICIOUS

PDF

90.1 KB Created: 2021-03-28 16:20:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0aff2273bcf0df29876f5b43a5639f21 SHA-1: 5b347815410ad7b60c682d31cae45efb5ea6c0a5 SHA-256: e337a8af3dba9fd1870841302ed7fd518a61873e6c448d2dc9302fcf7a5a7c0a
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, indicating a link farm or SEO spamming operation. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards an attempt to redirect users to malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/wix?keyword=trigonometric+functions+of+angles+worksheet PDF link annotation
    • https://zitolibozix.weebly.com/uploads/1/3/4/0/134040523/c599281a82d3.pdfIn PDF document text
    • https://fakedowekiz.weebly.com/uploads/1/3/5/3/135314463/wozilugud_tusagevisede_wowoti.pdfIn PDF document text
    • https://gupexududoteg.weebly.com/uploads/1/3/5/3/135302954/2242705.pdfIn PDF document text
    • https://polatubogo.weebly.com/uploads/1/3/4/5/134598163/f61cd8b93b3c8.pdfIn PDF document text
    • https://zanirifut.weebly.com/uploads/1/3/1/4/131407922/koped.pdfIn PDF document text
    • http://kegeminu.iblogger.org/wepezurutimapim.pdfIn PDF document text
    • https://sivisobimiji.weebly.com/uploads/1/3/4/7/134754783/f52012f0f8e.pdfIn PDF document text
    • http://vutanari.22web.org/kenikusigujuvodotusu.pdfIn PDF document text
    • https://wefikugozakilo.weebly.com/uploads/1/3/1/0/131069992/3773239.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
    • http://www.daltonmaag.com/In PDF document text
    • http://xivubijorudi.epizy.com/what_is_history_of_c.pdfIn PDF document text
    • http://sawujasasit.epizy.com/kawedorob.pdfIn PDF document text
    • https://e0ff2378-281a-4ea3-95ae-419c526fdc99.filesusr.com/ugd/0baf77_2c3b208858304748b6eec23882a72aeb.pdf?index=trueIn PDF document text
    • http://kekogixo.epizy.com/88219808799.pdfIn PDF document text
    • http://kunibenurupamiv.rf.gd/how_to_program_comcast_digital_adapter_remote.pdfIn PDF document text
    • http://judegedemo.rf.gd/faringoamigdalitis_aguda_bacteriana.pdfIn PDF document text
    • https://070488ba-e3d9-4c74-834b-445551f5513c.filesusr.com/ugd/fb83f1_566c25a916a74baf8c3aaaec00cfc868.pdf?index=trueIn PDF document text
    • https://7f1d4f38-7308-4051-b389-b8ed31312188.filesusr.com/ugd/e948c1_bb2fc98deca74c2aa72423f02a0ddd1e.pdf?index=trueIn PDF document text
    • https://b5c4f4dd-ae1f-4f6a-908c-f463551224e4.filesusr.com/ugd/dafd60_c4265315c4ca472c9cf285f3f5b944ed.pdf?index=trueIn PDF document text
    • http://jegezutixaxovu.epizy.com/libros_de_coaching_ontologico.pdfIn PDF document text
    • http://jibogifimot.epizy.com/bozibaminedov.pdfIn PDF document text
    • http://zumukitukojus.epizy.com/57249171919.pdfIn PDF document text
    • http://mujofekiroteped.epizy.com/rudujorixare.pdfIn PDF document text
    • https://35479656-6a94-44d6-ac55-da507c14a2ae.filesusr.com/ugd/d68318_f0fb2ec072b44bbb9c6a890d962a3595.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
    • 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
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e464.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE464 6500 bytes
SHA-256: 97b914117041240332c785363a0aed2013be70f032868068eba75284b5a8ee12
font_01_sfnt_off0000f466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF466 1964 bytes
SHA-256: 86ee88d2f479c7f6b33757b58910aef28daaa9d9b736dd12981443c8e7ba2ecf
font_02_sfnt_off0000fdb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB3 5284 bytes
SHA-256: 7e7c0820ea8093340bcb8eaca2513b34792bc0a10c660c537f3948712f677d86
font_03_sfnt_off00010f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F8F 11188 bytes
SHA-256: 84960d74531603a3ea4b63fdd0a98866c16ac35004957c229e188b935512c406
font_04_sfnt_off000135ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135EA 16152 bytes
SHA-256: 107dd7461bad0ee7f69ec232d7edbfa51533cbe03462e0930b0bd999c9024e27
font_05_sfnt_off00014af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AF0 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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