Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f44f3b6898d92db…

MALICIOUS

PDF

145.8 KB Created: 2021-03-20 01:04:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ec13a7e6510cdc3cd8a2cd1ae77a07e4 SHA-1: 5aeb6b064fb45602417e8c9915e7669ae807fc8d SHA-256: 2f44f3b6898d92dbbb0e29ab52a737b8b61713af34dd76bbb771cb6ffa86877a
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are likely part of a link farm designed to deceive users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'anti ragging act sri lanka pdf' to entice clicks on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8538

Heuristics 4

  • 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 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
  • 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://soxebez.ru/award?keyword=anti+ragging+act+sri+lanka+pdf PDF link annotation
    • http://idealica-italy.site/dezugaligojiwaril0hymj.pdfIn PDF document text
    • https://vusipesokos.weebly.com/uploads/1/3/4/5/134585271/demavelotu.pdfIn PDF document text
    • https://saboruxeketeg.weebly.com/uploads/1/3/4/8/134850947/3126880.pdfIn PDF document text
    • http://zegererevez.medianewsonline.com/natelilivagupif.pdfIn PDF document text
    • http://static-get.top/woxuzuzagopukupuleg1xe8u.pdfIn PDF document text
    • http://wazojox.iblogger.org/14016187651.pdfIn PDF document text
    • http://nizavevorupuj.mywebcommunity.org/how_much_is_sonic_milkshakes.pdfIn PDF document text
    • https://damujulul.weebly.com/uploads/1/3/5/3/135335913/xejixub.pdfIn PDF document text
    • http://ruwexonofedu.iblogger.org/beholder_full_apk.pdfIn PDF document text
    • http://falutaburifa.iblogger.org/bukiromixajukedufugifan.pdfIn PDF document text
    • http://shtangelkipokupkiitd.online/78660602373elujk.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/5688923447ufm8q.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/chale_aana_pagalworld._io.pdfIn PDF document text
    • http://nufomutefitezag.epizy.com/bobbi_brown_makeup_tutorial_book.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/biology_book_high_school.pdfIn PDF document text
    • http://xakurukedafa.epizy.com/pcsx2_emulator_for_android.pdfIn PDF document text
    • http://ligagenaragad.rf.gd/asco_guidelines_white_blood_cell_growth_factors.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/first_aid_step_1_2019_vs_2020.pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6F 114380 bytes
SHA-256: 55bfdee3e9c004a21064f3a2f9486dfb1c985d41d25e45da7684071ab4e44e67