Malicious PDF — malware analysis report

Static analysis result for SHA-256 00cccdb2e732a5e7…

MALICIOUS

PDF

82.4 KB Created: 2021-03-04 05:52:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 351455973ddb462aade7394885cfe367 SHA-1: 59825c07920cceb66001456157e4b83504bff719 SHA-256: 00cccdb2e732a5e782dc94d9fbc09b346d03381558dc2b425d4e71c064f10745
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as a link farm, containing numerous external links to disposable domains and potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary goal appears to be directing users to external sites, possibly for phishing or malware distribution, rather than providing meaningful document content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://kuzutuzo.ru/award?keyword=american+buffalo+movie+ending PDF link annotation
    • https://cdn.sqhk.co/jumivosokigo/aoegiXh/mupopasoriwoxaxujoxadip.pdfIn PDF document text
    • https://vugesajovor.weebly.com/uploads/1/3/4/2/134265649/256d5358196c.pdfIn PDF document text
    • https://cdn.sqhk.co/feluxolid/i75Qic8/best_college_3_point_shooters_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/sutazojawote/hjjaVyG/loco_run_train_arcade_game.pdfIn PDF document text
    • https://cdn.sqhk.co/parikozug/f1uogfN/best_snes_emulator_android_tv.pdfIn PDF document text
    • https://wumefabifu.weebly.com/uploads/1/3/4/8/134888429/pifovugazemup-sekike-sifetajafena.pdfIn PDF document text
    • https://sojagimizalafar.weebly.com/uploads/1/3/5/3/135317111/6856051.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369504/normal_6015ee0bd0afb.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/igDggje/samsung_calculator_apk_xda.pdfIn PDF document text
    • https://luxisawevevolal.weebly.com/uploads/1/3/2/6/132682936/muruxisusivib-vobalirijifo-mijoxarukozubix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368752/normal_600a0b308a950.pdfIn PDF document text
    • https://cdn.sqhk.co/kekelivig/dghiehg/fusuvazilikugadatavefa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406516/normal_60393883e856a.pdfIn PDF document text
    • https://kubikogemovi.weebly.com/uploads/1/3/4/0/134095998/6edcd2d5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499984/normal_602b26bb7b6c0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jipowumat/autodesk_trueview_export_to.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/play_store_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/anari_full_movies_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/lijosafimafazaper.pdfIn PDF document text
    • https://s3.amazonaws.com/pekatikisuruki/acer_aspire_one_532h_2588_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/kickboxing_training_drills.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF946 5156 bytes
SHA-256: 0edd78e9b700c35af3254f35b8e3a7377f98a93e11a7c6e9b920332865431f9f
font_01_sfnt_off00010aaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AAA 10428 bytes
SHA-256: 7f5abd9e97bf2010956559b74ddeee7284a1f690efdbd81f1e5bafeffa1c5b81
font_02_sfnt_off00012e3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E3F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f