Malicious PDF — malware analysis report

Static analysis result for SHA-256 f879b4aaefd6a5e6…

MALICIOUS

PDF

79.9 KB Created: 2021-03-12 03:00:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb2dbcf675e4455c72a2ea9784272b54 SHA-1: 5b6d9bbe21c8810e45e3cd774c6f00b866df66fd SHA-256: f879b4aaefd6a5e621686246ebb522f7f4b56cfc789f8fee0e63c4a2f8a1d6c2
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL that directs users to a website offering a free movie, which is a common lure for phishing attacks. The PDF structure and embedded URI suggest it's designed to exploit users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • 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://xezojetit.ru/aws?utm_term=la+la+land+free+watch+full+movie
    • http://persequenteamsohbet.com/dijodey5kru.pdf
    • http://lidlid.xyz/free_printable_handwriting_worksheets_for_pre_kkx4th.pdf
    • http://nopatoveji.22web.org/mupapoguran.pdf
    • http://nigma24invest.online/97444769838w0ls5.pdf
    • http://sodaapp.pro/what_charger_do_beats_solo_3_use8mzy7.pdf
    • https://zorepuwozodu.weebly.com/uploads/1/3/4/3/134399810/kexosorenenamoxis.pdf
    • http://bioforcecolumbia.site/soleus_window_air_conditioner_8000_btuck1z3.pdf
    • https://musibagufes.weebly.com/uploads/1/3/4/5/134587398/gegefu_kakuderefajeruz_jemijimovegujo_livobu.pdf
    • http://olipaka.xyz/taxujijerojuseximegok8uy4h.pdf
    • https://jatilupek.weebly.com/uploads/1/3/4/4/134491857/4211814.pdf
    • http://shopbest.online/badman_binladin_energy_song0vfju.pdf
    • https://fatitabo.weebly.com/uploads/1/3/4/7/134757356/4b203b441.pdf
    • http://savadaqwe.space/87991357411wouru.pdf
    • https://rewajugelawuz.weebly.com/uploads/1/3/0/7/130738764/f259d71829cb0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/de71babd-5a07-4878-8565-52587c1d18e9/7672837231.pdf
    • https://s3.amazonaws.com/pisik/40265183220.pdf
    • https://s3.amazonaws.com/tesapibebujep/cdl_hazmat_test_questions_and_answers.pdf
    • https://uploads.strikinglycdn.com/files/0e3f17b9-5b74-4739-9f4f-8462765d3cde/50015987170.pdf
    • https://s3.amazonaws.com/nuruvapozixix/59378269064.pdf
    • https://s3.amazonaws.com/senodiw/bodyguard_full_movie_free_mp4.pdf
    • https://uploads.strikinglycdn.com/files/55969994-97ea-465d-9185-b4de6d6e41cd/59720713290.pdf
    • https://uploads.strikinglycdn.com/files/e17947c5-3cb0-43f1-b930-4a653c844816/iso_31000_risk_management_definition.pdf
    • http://gijafusatuvaxoj.rf.gd/broken_but_beautiful_all_songs_pagalworld.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb36.bin
46034e97168e791b34ce0d9f3938487cfaa808a8b470941f0648e876fce85264
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB36 5176 bytes
font_01_sfnt_off00010cc4.bin
98088390dcf71759c3601a3dcdc8dfb1cec6460e73839d254550d48565097e6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CC4 11076 bytes