Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ddcaa3df56415f8…

MALICIOUS

PDF

74.6 KB Created: 2021-03-22 09:28:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 616d738c8c530a875a279e2c60a3ac97 SHA-1: 7c95b3c695ea50032695eeeecb6f3b8258502c76 SHA-256: 1ddcaa3df56415f8de3aa7f5a80eee81044d745e957524df1136db19ddedc7b0
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier with high confidence. It contains an embedded URI pointing to a suspicious domain, 'xezojetit.ru', which is likely used for phishing or to serve a malicious payload. The document body, though heavily obfuscated, suggests a lure related to 'Hp easy scan chromebook'. No scripts were extracted, but the presence of an external URI and the overall detection profile strongly indicate a malicious intent to redirect the user to a compromised resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=hp+easy+scan+chromebook
    • http://zosujobitusup.iblogger.org/zijonapobulakip.pdf
    • http://mokemowowove.mygamesonline.org/nazakuvi.pdf
    • https://cdn.sqhk.co/mugegiduveb/jehUjdS/galaxy_attack_space_shooter_mod_apk_android_1.pdf
    • http://mibotirekusiw.mywebcommunity.org/print_book_staples.pdf
    • https://cdn.sqhk.co/dajuzafum/eOw058U/expert_home_design_fun_games_packs.pdf
    • http://lojapidabud.mypressonline.com/amoxicilina_400_mg_bula_eurofarma.pdf
    • https://murovufusefafa.weebly.com/uploads/1/3/5/3/135331463/tobiduxunuges_vapaxexikatupe_foroxusifajap.pdf
    • https://cdn.sqhk.co/bidubuwawi/haicFha/invaders_synonym_definition.pdf
    • https://tuvudasad.weebly.com/uploads/1/3/4/7/134749560/pujepax.pdf
    • https://cdn.sqhk.co/pimupigedu/h2VODia/como_fazer_manual_no_skate_3_ps3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pubanewu.rf.gd/mimij.pdf
    • http://bapexuzajo.epizy.com/lewaladapiwarutajibikira.pdf
    • https://s3.amazonaws.com/numegubowalonan/synthesis_of_arachidonic_acid.pdf
    • https://s3.amazonaws.com/jifedefujodu/kiss_the_rain_piano_sheet_music_free.pdf
    • http://wokarodefi.onlinewebshop.net/cuisinart_dlc-8_plus_work_bowl.pdf
    • https://s3.amazonaws.com/nefunupu/83769600361.pdf
    • https://s3.amazonaws.com/vovopafubipu/audi_a4_allroad_2016_owners_manual.pdf
    • https://89f68ddc-9f98-4e60-8afa-3e0ca6603e9e.filesusr.com/ugd/4725f1_4a0714ada18a4c02a95f9ffb5591fcc4.pdf?index=true
    • https://df6a9abb-74f3-47e1-b359-fe6d1019da36.filesusr.com/ugd/7921d2_84f3510db2184c92895467aaf49293fe.pdf?index=true
    • https://s3.amazonaws.com/fejififimaketo/the_four_functions_of_management_involved_in_rowe_include_all_of_the_following_except.pdf
    • http://rogofideb.onlinewebshop.net/59238124487.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_off0000e719.bin
d28f241c8ba3eec0a0f7c09e6a7b7e71b635b3f682454c101b7f935277665b46		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE719 5408 bytes
font_01_sfnt_off0000f958.bin
43ec6938eb3e7890b6cdeb9535b31fa48c9d6a69276349be06b172901c0d7f4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF958 10408 bytes

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