Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeba0999205d560c…

MALICIOUS

PDF

76.3 KB Created: 2021-03-19 14:44:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15789f933a8a86733bb42c4ad31dccc3 SHA-1: 55456e12a106a478917aeec872183f8ccd7ac48c SHA-256: aeba0999205d560c4049c7da61babbda390c987cdf0570d6cd7db011834a9add
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that, when clicked, leads to a domain associated with malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or delivering a secondary payload. The document body, though heavily garbled, suggests a lure related to a book, which is a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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://botokaw.ru/award?keyword=livro+administra%25C3%25A7%25C3%25A3o+estrat%25C3%25A9gica+conceitos+pdf
    • http://erethiztzj.space/botox_aftercare_instructionsv8c52.pdf
    • http://greatholl.com/letras_de_haz_llover_rompe_las_fuentes_del_cieloi05ku.pdf
    • https://cdn.sqhk.co/janezewufaj/cjhgj4I/dragon_ball_heroes_world_mission_arcade.pdf
    • https://cdn.sqhk.co/dorejewibiz/hcVg6ig/23972632993.pdf
    • https://cdn.sqhk.co/sawomunuj/7ehe6Yi/super_cheap_transmission_filter.pdf
    • http://detonic-ordina.website/how_to_turn_down_volume_on_sylvania_portable_dvd_playerms6ns.pdf
    • http://zaluwuxevu.iblogger.org/49970140528.pdf
    • http://chemistryplus.space/fofaxexelesaloxazixsyine.pdf
    • http://noksipals.online/can_you_play_world_war_z_cross_platforml3o5b.pdf
    • http://g2am2e.xyz/xomugedaxinotu96xv0.pdf
    • http://nuverlites.online/reporter_tv_malayalam_anchorstgat1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/pegek/90136755777.pdf
    • https://s3.amazonaws.com/nevowimo/david_copperfield_oxford_bookworms.pdf
    • https://uploads.strikinglycdn.com/files/0d4e628e-e89f-4b66-8172-2a4a03f18cbd/samsung_sm-t580_battery_replacement.pdf
    • https://s3.amazonaws.com/mubemutolewe/kilerex.pdf
    • https://s3.amazonaws.com/donarepemi/faropixigaxodurufe.pdf
    • http://gidovofivoj.epizy.com/lactogenesis_1_y_2.pdf
    • http://wupaxozejite.rf.gd/26319825082.pdf
    • https://s3.amazonaws.com/xozeb/336877525.pdf
    • https://uploads.strikinglycdn.com/files/810bc700-b5cd-43bd-8eda-6f57083fd202/how_often_should_you_do_functional_training.pdf
    • https://uploads.strikinglycdn.com/files/82b10015-a7b4-4f7e-8a25-1b0b7ff0acaa/ranks_and_insignia_of_the_ss.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2fb.bin
2e23dd17d89c34973ee325134d239ec4e9c194c1430ae1acf02ce1f66206c40b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2FB 5872 bytes
font_01_sfnt_off0000f5c1.bin
8d588d9c6284a2d070dda066d84311f52382b051ade80f9b11be64a9f549eb15
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C1 13096 bytes
font_02_sfnt_off00011cd9.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD9 4324 bytes