Malicious PDF — malware analysis report

Static analysis result for SHA-256 20beb5f00e0e3b25…

MALICIOUS

PDF

78.7 KB Created: 2021-03-17 19:42:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 04ebe6924c0c20479567bbc454d470f5 SHA-1: 9ff962197ba0bdc90297ec92f2c0da2b6bb199db SHA-256: 20beb5f00e0e3b25199b561dd4e1a04115bb61f263f9e877db3583d63545eee4
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, with a critical heuristic firing for a PDF link farm. The primary URL points to a keyword-related page, suggesting a potential phishing or SEO spamming campaign. While no scripts were extracted, the PDF structure and numerous external links strongly indicate malicious intent, likely related to directing users to malicious or spam content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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.
  • 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://xajibur.ru/wb?keyword=taurus%20millennium%20g2%2040%20review PDF link annotation
    • https://penopetidurip.weebly.com/uploads/1/3/2/8/132815040/posonubibex_pitir.pdfIn PDF document text
    • http://jidokove.scienceontheweb.net/xudavaxujalukom.pdfIn PDF document text
    • https://wujuwali.weebly.com/uploads/1/3/5/3/135326068/pujemowad.pdfIn PDF document text
    • https://soxagunolipug.weebly.com/uploads/1/3/4/8/134887217/8a227bfa.pdfIn PDF document text
    • http://zumufufup.sportsontheweb.net/lokenopo.pdfIn PDF document text
    • http://jiwabozaxexe.mypressonline.com/headway_beginner_teacher_s_book.pdfIn PDF document text
    • https://waxalema.weebly.com/uploads/1/3/4/3/134364729/dipatijo_kisugosi_lixokiro_xuzelepi.pdfIn PDF document text
    • http://sazulido.medianewsonline.com/binary_options_zero_risk_strategy.pdfIn PDF document text
    • https://dadekubezaxinis.weebly.com/uploads/1/3/2/7/132740399/2179833.pdfIn PDF document text
    • https://xuvajova.weebly.com/uploads/1/3/1/3/131380845/1414339.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/baby_doll_uma_song.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/snapfon_eztwo_3g_unlocked_gsm_senior_cell_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/fikomagutixanaruguga.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/life_application_study_bible_apk_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd71b7fc-d311-42c9-8193-4295115a5b69/vikekulutedoje.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/94526129946.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/brother_tn-630_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/32368302087.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/how_to_connect_universal_remote_to_tcl_roku_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/41151002908.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/allstate_insurance_company_of_canada_annual_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a83b04fa-fade-4c9c-b9fa-f80703f98a74/candide_by_voltaire_audiobook.pdfIn PDF document text
    • http://zeteximezoxa.myartsonline.com/52669696036.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f7af85c-fcde-48c2-8c04-265c5f245fb8/21069522038.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_off0000f388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF388 5468 bytes
SHA-256: 869ec795ee90546ec9df229cea986b3217ff4460feece3a3b967ebf28cade303
font_01_sfnt_off00010623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10623 10912 bytes
SHA-256: 804153d5b311c4218496400c25f5303062eade7df5ff76b3b2f2ae7461ed092d

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