Malicious PDF — malware analysis report

Static analysis result for SHA-256 23a932fadfc953aa…

MALICIOUS

PDF

78.7 KB Created: 2021-03-31 21:30:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5b0504ff902a5a81832c7d6e9a1e65e SHA-1: d53d8c782a6e0cbc34f5beeb4b51484757d5a912 SHA-256: 23a932fadfc953aa01bba983ac05fab338fa1944fb5b2e8fc85575c15b5b163e
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically 'https://vilenefex.ru/strik?utm_term=how+to+change+wii+to+hdmi'. The document body, though heavily obfuscated, contains text related to 'How to change wii to hdmi', suggesting a lure. ClamAV detection and ML classification strongly indicate maliciousness, likely a phishing or trojan delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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://vilenefex.ru/strik?utm_term=how+to+change+wii+to+hdmi
    • https://cdn-cms.f-static.net/uploads/4389568/normal_5fd19f9e3aad3.pdf
    • https://static.s123-cdn-static.com/uploads/4488855/normal_5ff925a67a5fa.pdf
    • https://cdn-cms.f-static.net/uploads/4480891/normal_6015c850c7eae.pdf
    • http://metuxuz.iblogger.org/97110278024.pdf
    • http://rinavorepem.iblogger.org/gilenoxulid.pdf
    • http://app-3null.com/ielts_10_test_1_writing_task_1_model_answeralrgc.pdf
    • http://newobesarejif.22web.org/what_is_my_faith_journey.pdf
    • http://vereffka.xyz/wojna_polsko_bolszewicka_przyczyny3q4xv.pdf
    • https://static.s123-cdn-static.com/uploads/4445119/normal_6000e4a9a5a07.pdf
    • http://popenufavox.iblogger.org/sotobofu.pdf
    • http://vuwavutos.iblogger.org/good_news_translation_bible_free.pdf
    • https://cdn-cms.f-static.net/uploads/4378410/normal_5fd86f6c1194b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/13720dfb-5d92-48af-898a-84c102f041b7/o_que_dizer_o_que_fazer_quando_ele_vem_aqui_cifra.pdf
    • https://uploads.strikinglycdn.com/files/25a4fe7f-76cb-490f-9b98-2ec11fe99957/wewutowese.pdf
    • https://0ea1ff7f-05b3-43a2-9744-178351a05ed1.filesusr.com/ugd/01f9b9_2703801921a94673a39edd56d277ce78.pdf?index=true
    • https://s3.amazonaws.com/mexavofezoxi/correo_alumnos_upm_android.pdf
    • https://c2c662fa-00ac-4c69-bf5d-04da7d6c99e2.filesusr.com/ugd/9b33c5_bef245d7e2a04383b58f1ad10dc1a763.pdf?index=true
    • https://s3.amazonaws.com/wemazun/4221105117.pdf
    • https://uploads.strikinglycdn.com/files/99e4ae3b-6d8e-4b81-863e-126cf15c8424/zebudujojegidepuduru.pdf
    • https://s3.amazonaws.com/wetowuzuxit/a_study_in_scarlet_quotes.pdf
    • https://0298dc5a-7924-4276-8279-06452a5288da.filesusr.com/ugd/b30cf0_e81209445bc8426486db85d7c101dc2b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/45213c04-64e3-48c2-a507-45e5c9be7d7b/how_to_factory_reset_gopro_hero_3.pdf
    • https://s3.amazonaws.com/vitelitubovuluj/asus_zenfone_live_l1_update_android_pie.pdf
    • https://76f5a3e5-08d8-4581-9975-6c1b933a1845.filesusr.com/ugd/dbbd16_880b1b1685724c2c97f03f646cf9e115.pdf?index=true
    • https://24d1f61b-f5c5-4d2f-8180-62589f44e8d8.filesusr.com/ugd/eed56f_494c57659e234683834e137c24dcfa52.pdf?index=true
    • https://s3.amazonaws.com/pafiganovavi/ac_market_ios_ipad.pdf
    • https://uploads.strikinglycdn.com/files/0ec23499-d24f-4b07-9d2c-8268359f09df/megadigejopifusaletabup.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_off0000f586.bin
4ba3d31202f0438fa9ce12901a70a0516b162a7d0c8784fff15901b8a6386cba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF586 5100 bytes
font_01_sfnt_off000106cd.bin
bcbb4e8a9c05cda44c628344619eee8bbbc1afc95b75c450b98b5727010d4481		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106CD 10684 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.