Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d4a506e20d7bd5e…

MALICIOUS

PDF

175.8 KB Created: 2021-06-09 18:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: a7e3d1684abc5c9a01c2e72921242f02 SHA-1: 0a418e62179cda24491dcb074b7f9f60534e37de SHA-256: 1d4a506e20d7bd5e22b3ed11204012b34c7354086ccd11afafc565a65550d368
126 Risk Score

Malware Insights

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

This PDF file is classified as malicious by ML and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains references to 'Pokemon xy series full episodes', likely a lure to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://crewmak.ru/pbw?utm_term=pokemon+xy+series+full+episodes PDF link annotation
    • https://xipunozelizu.weebly.com/uploads/1/3/1/3/131382486/zaroxufolimurefufug.pdfIn PDF document text
    • https://xeravatiwawu.weebly.com/uploads/1/3/4/6/134603636/6f0b31b329.pdfIn PDF document text
    • https://dodoxatufasiw.weebly.com/uploads/1/3/2/6/132681482/xatagatujerugufu.pdfIn PDF document text
    • https://biditojutorosas.weebly.com/uploads/1/3/4/6/134657596/267221.pdfIn PDF document text
    • https://kilazazemuvazu.weebly.com/uploads/1/3/1/4/131452741/7c5a0f53c6bb3.pdfIn PDF document text
    • https://memumozevevu.weebly.com/uploads/1/3/4/3/134378747/wexopomodinorem.pdfIn PDF document text
    • https://bepewosub.weebly.com/uploads/1/3/4/4/134445398/mamufekexutaj-giwovosi.pdfIn PDF document text
    • https://vokugekezigak.weebly.com/uploads/1/3/4/5/134592112/tolefubaloni.pdfIn PDF document text
    • https://lanekugufer.weebly.com/uploads/1/3/5/3/135351315/a00b556228622d.pdfIn PDF document text
    • https://dasifapuzo.weebly.com/uploads/1/3/1/4/131454731/loguxizafef.pdfIn PDF document text
    • https://panulozeti.weebly.com/uploads/1/3/5/3/135351273/e88a185.pdfIn PDF document text
    • https://movakesomerinid.weebly.com/uploads/1/3/4/5/134528648/zubilafu_xukitawaga.pdfIn PDF document text
    • https://pimejowutaviju.weebly.com/uploads/1/3/4/4/134495028/cba32.pdfIn PDF document text
    • https://roxasudafuj.weebly.com/uploads/1/3/0/7/130740166/wowoxikawuvus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/52e66845-e678-4fb0-90ce-108c06a75579/gavipobewiwazafuwobelu.pdfIn PDF document text
    • http://bulafiko.pbworks.com/w/file/fetch/144759765/1730536151.pdfIn PDF document text
    • http://wenitat.pbworks.com/w/file/fetch/144551961/55906723005.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ab57f3d-869c-4979-a2bc-608562b7c341/vifeguzutozugawoxalunijep.pdfIn PDF document text
    • http://jolowajuwijo.pbworks.com/w/file/fetch/144522741/taxoginolakivute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/044dd5f7-2b5c-4fb8-a8b5-899b0daa2b9a/12_gods_and_goddesses_of_mount_olympus.pdfIn PDF document text
    • http://xutosop.pbworks.com/f/cube_game_formula_download_in_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59427759-4b8d-46ae-b1ae-480b5e2ff426/microsoft_365_teams_user_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1b8da67-78ca-4f2c-abfb-67456d73356e/vaxororijovetabolaponexex.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_off00012d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D54 107780 bytes
SHA-256: f936ce05b4bd8834148565401db4cbb647a547ce6dd3c0f64c319c3ff9b87f09
font_01_sfnt_off00026d36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26D36 5016 bytes
SHA-256: 5cb487640f39d9e1e9f3ae826d795df7fd3ec309c17520803ec23440b3246b75
font_02_sfnt_off00027e2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27E2D 11056 bytes
SHA-256: f11fd705c972a2d2306713d7fbf71b0362383210f22bd957931d69494f565818
font_03_sfnt_off0002a358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A358 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2