Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9c65e3423ff2868…

MALICIOUS

PDF

89.5 KB Created: 2021-03-29 23:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0223aa89bb7cdaf9e829cf3a321809b3 SHA-1: c561c46df3d16cef4909828baba8addcb98894de SHA-256: f9c65e3423ff2868330b6d2b15dc8803c9f4b381797ca72d06ee134047dcd0e9
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are designed to redirect users to potentially malicious sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to host phishing content. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://bologen.ru/award?keyword=atal+pension+yojana+details+in+tamil+pdf PDF link annotation
    • http://zatawonilar.iblogger.org/wedavezegeg.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/21_buttons_apk.pdfIn PDF document text
    • http://inter-kalinka.ru/kwame_nkrumah_neo_colonialism_definitionazoax.pdfIn PDF document text
    • http://ogranicbio.space/poniwominubawugils1i7.pdfIn PDF document text
    • http://jinowibiko.iblogger.org/buxojiselaletasebe.pdfIn PDF document text
    • http://trudogoliya.online/atwood_rv_furnace_not_working0kxc7.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/wooden_playhouse_plans_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/kenajabimenebibabetofofe.pdfIn PDF document text
    • http://gurerawe.22web.org/bulej.pdfIn PDF document text
    • http://gikubozudunol.iblogger.org/29889351682.pdfIn PDF document text
    • http://opensalle.xyz/nudizogamudadisimome0cvic.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/luwinapulavakijuvofikebo.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c8cd3e7-15c6-4e43-b30a-63324fef8927/mlk_letter_from_birmingham_jail_essay.pdfIn PDF document text
    • http://joxumokuri.epizy.com/31707748414.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32bc7143-d8c3-4313-ab92-c48c63e3f298/87218997785.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c8017f1-9b07-474f-b0d1-019da6f48ab9/tenemo.pdfIn PDF document text
    • http://turitize.rf.gd/funny_bone_defensive_driving_test_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9ffff2a-75af-43e5-aae2-15a87d87cc4f/zoom_5352_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04918aaf-9489-4db4-bba5-82a49eb0161a/dell_latitude_e5400_memory_upgrade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ae08466-3392-4e77-a9d3-a39a63925a70/sony_icf-c1_service_manual.pdfIn PDF document text
    • http://desabukil.epizy.com/95239528394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4661098a-2225-4502-b7c1-35ff6f797e00/korg_sv-1_88_for_sale.pdfIn PDF document text
    • http://kitakel.epizy.com/idsa_guidelines_uti_pediatrics.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000101dd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x101DD 23612 bytes
SHA-256: b540f50509adcdf0c294ccfbbd190edba8a0ac56e12a7edc7f74b66ef9faf701
font_00_sfnt_off0000effc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFC 5256 bytes
SHA-256: fd269a6ca044d20f4efbb971a41b136583bfa1d507ca996c6efb2e6ba603d77a
font_02_sfnt_off0001340c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1340C 9772 bytes
SHA-256: e3db03a9df81d5884e355c32b096c63b8836d1eae90260909b11f39b1261daf6