Malicious PDF — malware analysis report

Static analysis result for SHA-256 41ed9187d6b67c5b…

MALICIOUS

PDF

121.1 KB Created: 2021-04-03 11:11:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 02f4b2b0444a21eaaf595514ad19d8ad SHA-1: bf2f156f7ace5ae5ff00c5114a695868c0866234 SHA-256: 41ed9187d6b67c5b37fb8557277c0093396b8905fd71aef33af9493cb4c492e0
212 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is identified as a malicious PDF by ClamAV and exhibits characteristics of a link farm, with numerous embedded URLs pointing to external sites. Several of these URLs are associated with known malicious redirectors or disposable hosting, suggesting an attempt to lure users to potentially harmful content or phishing sites. The PDF's structure and the nature of the links indicate a tactic to distribute or redirect users to malicious payloads.

Machine Learning

  • Nyx PDF Classifier clean score 0.0957

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://dafemum.ru/award?keyword=tibetan+buddhist+mantras+pdf In PDF document text
    • http://grenkasalo4.xyz/897934000647roqp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393208/normal_5fcbac92227ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421468/normal_603ddf1bee639.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/blhdghF/toca_builders_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381289/normal_5fe82f4455fa8.pdfIn PDF document text
    • https://nujalujuxak.weebly.com/uploads/1/3/5/3/135347358/5e16fefc19fab77.pdfIn PDF document text
    • https://cdn.sqhk.co/wokinuge/jjieMmp/free_student_attendance_tracker_app.pdfIn PDF document text
    • http://all-casino.xyz/prevent_form_submit_on_button_click6gwv6.pdfIn PDF document text
    • https://mufusudakewita.weebly.com/uploads/1/3/2/6/132681672/wasusobasitix-jozodebumewadi-rinegirub-guwitagib.pdfIn PDF document text
    • https://cdn.sqhk.co/fadejiweruw/ahijhLk/final_heroes_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474985/normal_60400bd40a4f2.pdfIn PDF document text
    • https://jagunafine.weebly.com/uploads/1/3/4/3/134363358/zoladuj_lizixazipilazi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • https://0c2a7d7b-be9d-4ef2-a94c-09ca905cc17d.filesusr.com/ugd/7d21c0_58bb8f87602b45b680b86d73a5adb4d8.pdf?index=trueIn PDF document text
    • https://6593eeda-10fe-4128-810f-cbbc79f0a4f8.filesusr.com/ugd/c0a4bf_e5ce04ee5036431faf9023c2a8d2355c.pdf?index=trueIn PDF document text
    • https://e148473a-3d1a-46f8-b788-fbc1f5af68d4.filesusr.com/ugd/e1e70b_9c9f068438ad4002bac5520c8c30c9e7.pdf?index=trueIn PDF document text
    • http://zefinut.rf.gd/19475608020.pdfIn PDF document text
    • http://wikatamuk.rf.gd/scrivener_3_android.pdfIn PDF document text
    • http://povemuxituziv.epizy.com/wukeraxuzip.pdfIn PDF document text
    • http://dapizifotokom.epizy.com/4548492814.pdfIn PDF document text
    • https://ef9935f7-a918-44a1-999f-f1d50a45e4a7.filesusr.com/ugd/b463f2_dc77419b1b84440c8d86178d0265c771.pdf?index=trueIn PDF document text
    • https://748f1d53-d141-46c1-926a-d14fc69713a3.filesusr.com/ugd/e3ed1f_e73072097b08425cb7cc7090033ada45.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://www.gnu.org/licenses/lgpl.htmlRegularDanhHongIn PDF document text
    • http://www.geocities.com/dnhhngIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 8

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14427 9088 bytes
SHA-256: 8400bfcb5a916dee3e8b92dd83527e1a658d7eca470406a997b7ea120c255146
font_01_sfnt_off000162b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162B8 5108 bytes
SHA-256: b66de0ed902e18245a724560d53716e8e0bedda6015cf6b5309b4bb161ad9462
font_02_sfnt_off000173cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x173CD 4472 bytes
SHA-256: 9123a1c4da111a845aa5fa8204a969b8e324c5c5105770c66282dcacc97015c8
font_03_sfnt_off000183ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x183EF 13016 bytes
SHA-256: 354bffdca099b9686530f58636e1cf9d59606dd6b3ef7ff37044309d07ef9534
font_04_sfnt_off0001a07d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A07D 5452 bytes
SHA-256: 8574c34eb3aac82550fe44487a2c00a4f41ac06b3a76033a2c9499548a99d4d1
font_05_sfnt_off0001b24f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B24F 3728 bytes
SHA-256: 8f9a181dd53415c68c870966de149f6174130025868b637ad5ac7e351b9c4ccc
font_06_sfnt_off0001c083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C083 5544 bytes
SHA-256: ac4d518cbe31e952314f71c080281c6c4db035f3851c217f2244b139e6996404
font_07_sfnt_off0001d139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D139 3712 bytes
SHA-256: c63cd7786f10e3d394a3baaae1bb432089b0fab257e3848d78baffec0584c8e3

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