Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1ddd58cfb1e8cfd…

MALICIOUS

PDF

82.8 KB Created: 2021-04-19 00:07:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: dab95d0892fb8607c7f4d670ec40d20d SHA-1: df4ccc8637652bc0aaa59284470f630c6015dfd3 SHA-256: f1ddd58cfb1e8cfdd224434749ef4c4f10c56b7a4727da531ecc6d650ddd2e48
224 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document exhibits characteristics of a phishing lure, including a fake CAPTCHA and a download button, designed to trick the user. It also contains a URL that likely leads to a malicious payload or phishing page. The presence of these elements, combined with ClamAV detection and ML classification, strongly suggests a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://dugedepap.ru/strik?utm_term=how+to+get+cracked+minecraft+accounts PDF link annotation
    • http://saniwofixapu.mygamesonline.org/2127468047.pdfIn PDF document text
    • http://modezewop.mygamesonline.org/chapter_9_access_control_lists.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/356ddd90-40f6-4155-aeae-a2a3a6dfe8a4/lusuvevumobubidopo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f828791e-2488-4a35-b492-72680c659793/3668084266.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/what_is_the_message_of_green_eggs_and_ham.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9773f3e2-41ba-44c7-a44e-1ad15389bc72/30852389908.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/mission_impossible_flute_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/resawajogumorikapajuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0d831f2-ac34-4263-b666-ab423daca1e4/whos_who_in_wu_tang_an_american_saga.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/761086802.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/7979008805.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/bagiverigizuzar.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/pewter_report_cover_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c78b613-7e7e-4960-ac40-56739d166e7e/29081981322.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b9aa7fb-a1f3-40bd-ac2b-06a40c3a82e8/which_word_best_describes_the_climate_of_southeastern_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/73411752943.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/475211d8-e3b8-41b3-98e1-26fb70835146/what_is_a_moral_argument.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_off000101cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CC 5428 bytes
SHA-256: 5ae17aab622bc0727c93cc300c5711a8e70c2a8a7613f0c4e15314ac39e85481
font_01_sfnt_off00011449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11449 11780 bytes
SHA-256: 00327c02ee7e000bc95e134d940b2792b01c68f7e0d98ead185d90fb4d6187ea

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