Malicious PDF — malware analysis report

Static analysis result for SHA-256 bedde0dbb3d7f6f1…

MALICIOUS

PDF

62.8 KB Created: 2020-12-27 17:30:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ec6325096ca27876e68910fc40539610 SHA-1: 6d6477537bba38b547b8c9f8c5a7c5e99d17c350 SHA-256: bedde0dbb3d7f6f1a2f6e3ed6e6191737f5c39dfca7dfa1155781cb3e9ad281a
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, and contains numerous links to external sites, including a known malicious redirector. The document body, though partially corrupted, suggests a lure related to professional training, likely to trick users into visiting malicious URLs. The presence of embedded URLs and the heuristic firings indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/aws?utm_term=organigramme+centre+de+formation+professionnelle In PDF document text
    • https://cdn.sqhk.co/pefibovip/chbjgjg/speed_boat_racing_games_free_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/juvexafi/g8ihdHS/bobelomapimonunom.pdfIn PDF document text
    • https://wabemogulumog.weebly.com/uploads/1/3/4/3/134384503/vegekosov.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzutuse/hhqhqgj/download_apk_vpn_private_uptodown.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/dc65b207-63af-4107-abc7-b6b9472cfd50/dbt_skills_training_manual_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fbfc0bb-ce68-4d3c-b5db-94b7eea8bed7/bajafebalulitisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ace9aad8-de50-45a1-8930-2d37dd6a08cc/jedudogureme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcfbc77a-f7fc-4455-ac12-691a6949fe7a/suvipeboxobigaramapajaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11428089-271c-4554-99cb-64dc76877c82/87997037695.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/chrome_beta_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/befuxuresevir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cfed857-4d03-4bc8-a890-bcf814c18426/talking_to_clanden_new_vegas.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_off0000b7e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7E2 5504 bytes
SHA-256: 95910e02a58242cfde22af43a7fc948390e80406c6da957de17a21e57d1ea66b
font_01_sfnt_off0000ca85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA85 10880 bytes
SHA-256: bc94b49b04284134ef084304397a2751a96f43012a3e71ef0ec12b5931306dba

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