Malicious PDF — malware analysis report

Static analysis result for SHA-256 619578b59edb7fef…

MALICIOUS

PDF

94.8 KB Created: 2021-03-21 03:21:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 61242bb177a2c0c514ca5172d6df2b1c SHA-1: 2453970585a2aa58090fd2737735f91d856469b6 SHA-256: 619578b59edb7fef4d3dea1c1830f744e72d62a93d909c872cf2ced72e0dd652
186 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of external URLs points to potential redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://botokaw.ru/wix?keyword=mbox+pro+3+manual+espa%25C3%25B1ol PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419195/normal_5fdbc281d3b8e.pdfIn PDF document text
    • https://rovenefewapug.weebly.com/uploads/1/3/0/7/130775308/83c345b896c.pdfIn PDF document text
    • https://kidodizaramaba.weebly.com/uploads/1/3/4/0/134096495/xefudubofaninija.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444115/normal_6027890bf41a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384459/normal_605428c28c791.pdfIn PDF document text
    • https://fumuzuwuwuwupu.weebly.com/uploads/1/3/0/9/130969925/jovipifenul_judaregen_felepumewowud.pdfIn PDF document text
    • https://cdn.sqhk.co/ratijojitud/R6onX7Z/space_crew_review_ps4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413696/normal_6030eb4b39b2a.pdfIn PDF document text
    • https://tadilagene.weebly.com/uploads/1/3/1/3/131381422/xuxusekovewo-jozabax-xamukuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469834/normal_60430be04feae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496204/normal_60558f8fba38d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486969/normal_600adc8629696.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485587/normal_602fcf9d9ce0c.pdfIn PDF document text
    • https://cdn.sqhk.co/sezivalaw/2gcegcM/2_player_soccer_drills.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470982/normal_5ff65ce029b65.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://borogibapomad.epizy.com/76929488409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0152f12e-736f-40c3-bfd9-fb6fe03d4c25/how_to_do_a_diagnostic_test_on_a_whirlpool_dishwasher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb77e0e3-6b54-4b97-ada3-eb792a39f45f/vimazuvuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30e64269-f49a-4564-a73e-1c874c5fb189/95401052666.pdfIn PDF document text
    • http://waminakukivexo.rf.gd/zotonekigomoma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24000d76-d700-4614-90a5-ca42198f0285/al_quran_price_in_bangladesh.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/812c0b8b-6b07-4353-92f8-d64be639d400/3406021449.pdfIn PDF document text
    • http://wemiwapava.epizy.com/crinkleroot_s_guide_to_animal_habitats.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000108f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F8 8988 bytes
SHA-256: 9c30ad3c9974021b1baea6b7942ec5241a57ee8ea3de3c6cf143c689e3240c23
font_01_sfnt_off0001270b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1270B 1724 bytes
SHA-256: 90fb1042126c15d8a796f6f88dc26108755fb6ca519e05b6d0de05ca6d3d969f
font_02_sfnt_off00012f95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F95 5556 bytes
SHA-256: 7af67783303a7ae9874590e2b859e6eab9f1a1f99fdda4ae781ae39c65e03ef3
font_03_sfnt_off00014227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14227 13492 bytes
SHA-256: 2c38a862b4196a09392384f83cdc5d41e9ddbfad823fcb7bce46850cbfdcd14c