Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e89e338b27f5b0…

MALICIOUS

PDF

71.1 KB Created: 2021-02-25 15:24:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: daffd6ed3ae1642a7aeaac776c6e26a3 SHA-1: f0f2b264748b95ee5344e63e1cfe6022be57e7f2 SHA-256: b9e89e338b27f5b0041c23cdeae313ffcf63efc46c77af84c874f0988945badc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/award?keyword=how+much+does+a+ruud+electric+water+heater+cost PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4423452/normal_5fff95b82f7d1.pdfIn PDF document text
    • https://kutemipemowu.weebly.com/uploads/1/3/4/8/134860595/gujonafogomog_lonijamo_miwejekizava.pdfIn PDF document text
    • https://wufikaxom.weebly.com/uploads/1/3/4/8/134883002/4494a.pdfIn PDF document text
    • http://rijewomel.scienceontheweb.net/rodidamavapulozi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410013/normal_5ff0367dd67eb.pdfIn PDF document text
    • http://junumidutuzakox.getenjoyment.net/musitekarazef.pdfIn PDF document text
    • https://gelatotagubas.weebly.com/uploads/1/3/0/8/130813077/566e6709d8a3.pdfIn PDF document text
    • http://vijuziruzunubiz.iblogger.org/88009657202.pdfIn PDF document text
    • https://wuremuzagatixob.weebly.com/uploads/1/3/4/6/134612401/8cfc06296ab.pdfIn PDF document text
    • https://biramufon.weebly.com/uploads/1/3/4/7/134775887/ladebinododoluvofomi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fetufebutegiv.rf.gd/weekly_goal_setting_template_for_students.pdfIn PDF document text
    • http://wuzisop.epizy.com/16536035563.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/pujixizuzexegixot.pdfIn PDF document text
    • http://ralirajuz.atwebpages.com/true_to_the_game_book_release_date.pdfIn PDF document text
    • http://pomababotesu.rf.gd/wilitejokipumo.pdfIn PDF document text
    • http://dazigeles.rf.gd/togizipol.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_off0000db18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB18 5232 bytes
SHA-256: 1e412446243d41405bbc09ecbe0e888b1b20f250b4e69d1dfebb07a9667d562e
font_01_sfnt_off0000ecc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC3 10080 bytes
SHA-256: 69dde91631e70c51ad029cb0356479baf4ae581d0c5e672c108723c2c7fb6c47