Malicious PDF — malware analysis report

Static analysis result for SHA-256 b386757a50d748c5…

MALICIOUS

PDF

97.7 KB Created: 2021-03-15 03:59:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7a2bb31098bbccb4c48c83dfa885c9b3 SHA-1: b10e7b44b640d82dcfa3735652c24cf6309ef134 SHA-256: b386757a50d748c52c868ab0dc6a701f23ec91f8b8b95476242103e097b4f504
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable hosting, suggesting a link farm or SEO spam operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

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://jacksth.ru/wix?keyword=dyson+dc59+motorhead+manual+pdf PDF link annotation
    • http://bikejesoxatelo.mygamesonline.org/ashton_woods_apartments_greenville_nc.pdfIn PDF document text
    • http://teachost.com/9297065258875spv.pdfIn PDF document text
    • https://tepiduti.weebly.com/uploads/1/3/5/9/135974730/muwus-lewizifobo.pdfIn PDF document text
    • https://cdn.sqhk.co/dovawowo/Hihif5C/cut_and_paint_mod_apk_download_android_1.pdfIn PDF document text
    • https://komamopiragi.weebly.com/uploads/1/3/4/4/134444029/jigen-nedudo-subojazope-remikuxut.pdfIn PDF document text
    • http://thepropheticapp.com/692214430449w5w6.pdfIn PDF document text
    • https://cdn.sqhk.co/palugalanivo/tuibZji/guns_germs_and_steel_worksheet_answers.pdfIn PDF document text
    • http://wordsidepost.top/jekyll_github_pages_templateckb88.pdfIn PDF document text
    • https://cdn.sqhk.co/tefulobesa/aghieNb/zotopu.pdfIn PDF document text
    • http://rofogukiluvupu.mygamesonline.org/caracteristicas_principales_del_modo_de_produccion_feudal.pdfIn PDF document text
    • http://wazepewazivulil.mywebcommunity.org/hp_photosmart_c5280_all-in-one_printer_price.pdfIn PDF document text
    • http://paxenazubenib.mygamesonline.org/how_to_program_a_ge_universal_remote_to_directv.pdfIn PDF document text
    • http://vclean-sale.shop/falajuduborevokafigugagcp4r1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8aefc570-8454-48c3-bb63-d4d1067b7ce0.filesusr.com/ugd/5c9621_f872664a147045909c6d98d45e17038a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c094764e-0baa-480b-aae0-316a75700cba/esv_bible_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fab3f133-4e96-4c69-8b8a-6f0fe8121a55/how_to_analyse_choice_of_words.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5b378ce-8702-4255-be12-0238657ddd8b/bob_evans_menu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0cdc8b0-61b6-4093-9530-4d3d708ec1cd/sanokabogiko.pdfIn PDF document text
    • https://9e1b5e4e-b4ab-405b-8fdf-b3b6d7b19c28.filesusr.com/ugd/94ea38_114f015d4e38430d8c2ea4b2d841ca3c.pdf?index=trueIn PDF document text
    • https://77483064-5892-4b52-b419-66e751946b77.filesusr.com/ugd/ef7b09_6d0921e63049445393f0e945612edaa3.pdf?index=trueIn PDF document text
    • https://c216880a-03a2-4774-ab7e-121c93799e8f.filesusr.com/ugd/b5aed9_28d8d6783ce64b5e8188e746ea33c110.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee5fa9aa-5322-4dd9-a330-b1a5458a4a31/blender_2.9_beginner_tutorial_part_1.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000125de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125DE 5776 bytes
SHA-256: 6b24c34ac7c8fff14e4a06ddfb0b65bc095a78c2b6a2595053003542ed763f67
font_01_sfnt_off0001396c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1396C 13076 bytes
SHA-256: 9799656406bffc720fc7cfb0ec2803f1e22ec1ec1b7652b0c77006b8e3b420cb
font_02_sfnt_off00016414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16414 16076 bytes
SHA-256: a0852c4690a6c7c4be107c8faaea32186891696821b3a96aec1037a99786b2f1