Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb779363be3a078…

MALICIOUS

PDF

87.1 KB Created: 2021-03-29 18:40:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d148a93baa223dd1278921009a2423a4 SHA-1: b531434cacbef71da30923e7840de1fe36f750da SHA-256: fbb779363be3a07822a91a34090c4d300bbd378fc84fd63a376a86d6ee5f44bb
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. While no scripts were extracted, the PDF structure and numerous external URIs indicate a potential for redirecting users to malicious sites or hosting further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://druttle.ru/wix?keyword=california+rail+map PDF link annotation
    • http://zijukikov.mypressonline.com/casio_fx_350ms_manual.pdfIn PDF document text
    • http://pihodze.com/call_of_duty_mw3_cheats_xbox_360_unlimited_ammodo3xo.pdfIn PDF document text
    • http://pay-order.info/gomixejovelekapijomazexat1rmm8.pdfIn PDF document text
    • https://gonotelavekufuf.weebly.com/uploads/1/3/4/6/134615299/6d29f0a0.pdfIn PDF document text
    • http://winsl.space/mortal_kombat_all_scorpion_costumesrsjfu.pdfIn PDF document text
    • http://creamwalls.online/edipo_rey_antigona_electra_zig_zag623t7.pdfIn PDF document text
    • http://car-test.pro/31042681900ghhfz.pdfIn PDF document text
    • http://itnegozio.info/what_is_processor_thermal_trip9hari.pdfIn PDF document text
    • https://lafimidoxugimu.weebly.com/uploads/1/3/4/5/134505664/suvonokowugazu.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • https://gazekusiparisom.weebly.com/uploads/1/3/4/0/134012522/rerudepitok.pdfIn PDF document text
    • http://jagelajovanapu.22web.org/attack_on_titan_live-action_movie_part_2_end_of_the_world.pdfIn PDF document text
    • https://genezekanoz.weebly.com/uploads/1/3/1/4/131413678/1b9d85d2e9487.pdfIn PDF document text
    • https://jewelilug.weebly.com/uploads/1/3/4/3/134331877/f2ad7bc2f.pdfIn PDF document text
    • https://bumibaniligaza.weebly.com/uploads/1/3/1/3/131383581/599145.pdfIn PDF document text
    • https://wutosalix.weebly.com/uploads/1/3/4/6/134635680/6ecb347.pdfIn PDF document text
    • https://wanusasa.weebly.com/uploads/1/3/1/0/131070791/mubujefetodoj_wevonine.pdfIn PDF document text
    • https://lavozeto.weebly.com/uploads/1/3/0/7/130775819/zedeto.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/96901573230.pdfIn PDF document text
    • http://sifebitufol.onlinewebshop.net/junudopatofuwugumavon.pdfIn PDF document text
    • http://foxorefo.epizy.com/inscription_formation_agregation_interne_eps_creteil.pdfIn PDF document text
    • http://pepawelifebin.rf.gd/zumafotosalufe.pdfIn PDF document text
    • http://kavuduvolilazod.myartsonline.com/agananooru_book.pdfIn PDF document text
    • http://bujekotu.atwebpages.com/brand_awareness_survey.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11750 4772 bytes
SHA-256: 8206c49d32f3f9a2735afe840f1b838a069328e6744f4c3bc9ad34441ce63ad8
font_01_sfnt_off00012775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12775 11680 bytes
SHA-256: 58d780a603486f844091b7d092fef500c6ca51bacfa52138d797b8f3baac08f7