Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bdc152581b78ad5…

MALICIOUS

PDF

76.0 KB Created: 2021-03-22 13:55:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94b9b50fefcb946314aa3f2905482bf8 SHA-1: 06f702371d1a80f284421e7b97ea580eb4c0fc0c SHA-256: 2bdc152581b78ad5ebe2278f834dafb1d77fb2998dd912ea33287a6403f37a31
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a potentially malicious domain. Heuristic analysis and ML classification strongly indicate malicious intent, with ClamAV identifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to a technical document, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/wix?keyword=fundamentals+of+dimensional+metrology+pdf
    • http://hargotel.xyz/20463238947dqkgj.pdf
    • https://nonelugo.weebly.com/uploads/1/3/0/7/130775267/sofuluxefiselof_babubodune_wadudutexevi.pdf
    • https://kivobuduzuv.weebly.com/uploads/1/3/0/7/130739084/734612.pdf
    • http://misstourist.info/2017_ktm_250_sxf_repair_manualn0g4d.pdf
    • http://septiki-rf.website/2005_cadillac_cts_engine_3.6_l_v6rdwv9.pdf
    • http://1xbets-regs.site/why_dont_books_have_age_ratings3wa9t.pdf
    • http://awpmode.com/fifty_shades_of_freed_songs_free_download_mp3k3fos.pdf
    • http://pusikoxelumide.iblogger.org/21309541382.pdf
    • https://litolojinoforiw.weebly.com/uploads/1/3/4/7/134721995/witaliz-zoxerajagulegi-boterore-xovaz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://duxejuxaxeze.epizy.com/les_etoiles_guide_michelin_2018.pdf
    • http://wukefomirufiza.rf.gd/jeevana_bhalobasa_korechi_je_bhul_ringtone.pdf
    • https://s3.amazonaws.com/tixedujegibex/reddit_wow_classic_leveling_guide.pdf
    • https://s3.amazonaws.com/dusubonifu/tododezebomo.pdf
    • http://penabak.epizy.com/canon_xl2_instruction_manual.pdf
    • http://besasasef.rf.gd/bogachiel_river_steelhead_fishing_reports.pdf
    • https://s3.amazonaws.com/tetenifeme/fugixumupagiwu.pdf
    • http://rofamotitasijud.rf.gd/damegovawiwakozugovidi.pdf
    • http://rabudigika.rf.gd/cambridge_english_empower_for_spanish_speakers_c1.pdf
    • http://vebavibokifoko.epizy.com/firefox_portable_edition.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_off0000eabe.bin
c6cdbdba638a65a5a936d1d7c14b4ec40e70e55d49ce17ecef6ca0efc76d5f7f
pdf-font-stream PDF embedded font (sfnt) at offset 0xEABE 5420 bytes
font_01_sfnt_off0000fd21.bin
4c29a7a8446d9f73bf587d4cbde31dd8e855eb37f9700e475af4dafed67a605c
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD21 10964 bytes