Malicious PDF — malware analysis report

Static analysis result for SHA-256 8142f418b17c4100…

MALICIOUS

PDF

84.1 KB Created: 2021-03-14 01:53:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: e5d7b0bb158f6a699b3067318b9dddad SHA-1: ff11e1991b8b4bd7ab72871319813c9caaf91ebe SHA-256: 8142f418b17c410002a6620e6b74816ea89ad76d67ccf983844c8157d3d99882
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URI points to a suspicious domain, suggesting a phishing or malware distribution attempt. While no scripts were directly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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 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://maypoin.ru/wix?keyword=does+days+of+our+lives+have+new+writers PDF link annotation
    • http://galosidijixiwu.mypressonline.com/kated.pdfIn PDF document text
    • https://cdn.sqhk.co/mozigizax/iVibjb1/lanemod.pdfIn PDF document text
    • https://cdn.sqhk.co/sutazojawote/UgcGzgj/us_army_hurt_feelings_report.pdfIn PDF document text
    • https://xoxebugifujame.weebly.com/uploads/1/3/4/4/134478015/3599948.pdfIn PDF document text
    • http://ruboperuba.iblogger.org/84580691244.pdfIn PDF document text
    • https://laguvibokabab.weebly.com/uploads/1/3/4/3/134383318/dotulatuxodosajefur.pdfIn PDF document text
    • https://cdn.sqhk.co/nepasibuta/iTTiehe/3415891731.pdfIn PDF document text
    • http://dejenenipanoz.22web.org/4090464930.pdfIn PDF document text
    • https://cdn.sqhk.co/rakujolo/fG6jgih/mokuvipugezigisu.pdfIn PDF document text
    • http://bigijawiv.scienceontheweb.net/mandel_o_capitalismo_tardio.pdfIn PDF document text
    • https://gegoviboz.weebly.com/uploads/1/3/4/8/134876631/d3de2138.pdfIn PDF document text
    • https://beserozufem.weebly.com/uploads/1/3/4/8/134864657/9591165.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/59348775-01b2-4b7e-84af-5bb3e7ada623/tamiya_king_blackfoot_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/282865b5-9043-4601-ac41-03427b657d0e/55469290436.pdfIn PDF document text
    • http://gepuxaxevo.rf.gd/animations_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/lukididufavexiben.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/walmart_cashier_job_description.pdfIn PDF document text
    • http://jetotajasavesi.atwebpages.com/how_does_the_new_game_show_the_chase_work.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9fa1beb-b081-4ff6-a1f5-96837101a4bf/jademolobepajido.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdeb9685-287f-4690-a370-abf70f766880/lirr_train_schedule_to_long_beach_ny.pdfIn PDF document text
    • http://nopawalaxuwaw.onlinewebshop.net/29116107216.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/bhagwat_geeta_in_hindi_video_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/anarkali_movie_songs_free.pdfIn PDF document text
    • http://vaxabusegaw.epizy.com/81929846370.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_off00010932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10932 5248 bytes
SHA-256: f1dd4dc792445298ca66908eeb42aab8490c4519e70b29ba2dc5d1f51d316437
font_01_sfnt_off00011b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B2B 11240 bytes
SHA-256: 257157f328f6d36a0e68e041ebfae158875b4f33ecad08845a95d440a9a6a342