Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1b4c9526f851f1…

MALICIOUS

PDF

72.3 KB Created: 2021-03-09 02:56:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0bb035fad7e2f26626f3e341a828f558 SHA-1: 71e568db6e987f4dcb525132f891892b2c16756d SHA-256: 0a1b4c9526f851f192c07389c1cd3edeca03a7572568ef1e3ce4da66a0199e63
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/award?keyword=prelude+in+c+minor+agustin+barrios+mangore+pdf PDF link annotation
    • https://cdn.sqhk.co/tuwetebep/fuHWHco/mt_rushmore_to_yellowstone_drive.pdfIn PDF document text
    • https://cdn.sqhk.co/terodekijur/jeahmE1/33243085598.pdfIn PDF document text
    • https://cdn.sqhk.co/bolukawet/9giLsyi/dividing_polynomials_problems_and_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/zoluwumenad/bciiMgj/4427557115.pdfIn PDF document text
    • https://cdn.sqhk.co/ruduligived/VKjiprR/zirubifawadawoba.pdfIn PDF document text
    • https://cdn.sqhk.co/zirigajer/giIwuEo/guwisexezewopezixujepiji.pdfIn PDF document text
    • https://betedodokadez.weebly.com/uploads/1/3/4/8/134882186/dekidemamolaworow.pdfIn PDF document text
    • https://cdn.sqhk.co/nogawevorus/jhpWif6/running_with_big_dogs_meaning.pdfIn PDF document text
    • http://universe1.space/67769826691rusdr.pdfIn PDF document text
    • https://pasifoberili.weebly.com/uploads/1/3/4/8/134881239/kesokoparisila_jogobefuxetexi.pdfIn PDF document text
    • http://rollernefritmassage.xyz/19561522850zm7rj.pdfIn PDF document text
    • https://mawetifatine.weebly.com/uploads/1/3/2/6/132683292/doferebapemalaget.pdfIn PDF document text
    • http://reduslimitalia-official.site/524880189640x9s0.pdfIn PDF document text
    • http://fesebenawasoz.iblogger.org/49362889058.pdfIn PDF document text
    • https://cdn.sqhk.co/segevenujuka/0iiiigf/37307695593.pdfIn PDF document text
    • https://cdn.sqhk.co/jovuvufoxet/9idZLHT/junior_achievement_stock_market_challenge_2018.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lilexod.epizy.com/icao_document_9760_airworthiness_manual.pdfIn PDF document text
    • http://lalejifidesuwo.rf.gd/vidmate_apk_for_pc_windows_10.pdfIn PDF document text
    • http://gakowutegufez.rf.gd/atualizao_azbox_bravissimo_transformado_junho_2019.pdfIn PDF document text
    • http://zemagarekerak.epizy.com/dotatotas.pdfIn PDF document text
    • http://wifapejaxim.rf.gd/diary_of_a_wimpy_kid_double_down_scribd.pdfIn PDF document text
    • http://vojebijawutirus.rf.gd/42748327174.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC3 5616 bytes
SHA-256: 84daf6ef77f82bc3b0a758a45a407b82cba5d53885445b68c785b9f0b9ab932a
font_01_sfnt_off0000eebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBF 10884 bytes
SHA-256: bbb215ddb931775db274637eecc5af7a4788d2393fae4f83c061a1771ebed8e3

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