Malicious PDF — malware analysis report

Static analysis result for SHA-256 a830d4e612a7e35a…

MALICIOUS

PDF

74.9 KB Created: 2021-03-14 20:06:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 36bdbe3c816f7408f354a7eff323e1dc SHA-1: 993c9a64616b6efb6d64e7c8beacfcdc7e550612 SHA-256: a830d4e612a7e35a022e85e41337766f19be507a504ce65d823c904df81cd6f5
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/wix?keyword=stuff+that+starts+with+red PDF link annotation
    • http://lotsmen.com/platform_sutra_of_the_sixth_patriarch_summaryv7p0w.pdfIn PDF document text
    • https://cdn.sqhk.co/junigofulum/Fjihhji/xulegovil.pdfIn PDF document text
    • https://cdn.sqhk.co/lekusovu/jihctRI/romona.pdfIn PDF document text
    • https://cdn.sqhk.co/gewewoturila/igEHghe/69359473953.pdfIn PDF document text
    • http://tramlaweq.online/zifalebejekigakanot66z.pdfIn PDF document text
    • https://cdn.sqhk.co/bulunazi/jjhghia/can_you_save_the_sculptor_sekiro.pdfIn PDF document text
    • https://cdn.sqhk.co/reromiwo/inbEghE/guess_the_year_picture_quiz_questions.pdfIn PDF document text
    • http://narelarijejale.iblogger.org/tivusigudulebojap.pdfIn PDF document text
    • https://cdn.sqhk.co/wexunaveb/Fiiiaij/hitman_s_bodyguard_movie_download_in_tamil.pdfIn PDF document text
    • https://cdn.sqhk.co/mojikeke/cEdyge7/jugar_dead_trigger_2_para_pc_online.pdfIn PDF document text
    • https://cdn.sqhk.co/wejafivelij/Wgfibjj/27440254157.pdfIn PDF document text
    • https://cdn.sqhk.co/fakomuse/jhgcigO/tujotakipasutuxu.pdfIn PDF document text
    • https://cdn.sqhk.co/mazinenik/Mjfbjic/zigelur.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/ihjt0ge/guess_bollywood_movie_name_by_image.pdfIn PDF document text
    • http://duxeluwezix.iblogger.org/xikevipad.pdfIn PDF document text
    • http://pycnidwzxc.info/who_started_cognitive_psychologytie3j.pdfIn PDF document text
    • https://cdn.sqhk.co/zebapomiz/UXPjehe/couchbase_lite_swift.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xeziribosivamis.epizy.com/brevet_college_2019_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/126d2f5d-7de9-49e1-91a3-0ba1e7b77062/trane_xe90_furnace_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60a8be24-7dd3-425b-8ef1-2b9c776adafd/lonezevetoga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72be05c8-9240-4361-a29f-8be4a59b2a89/60156146961.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_off0000e7df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7DF 5156 bytes
SHA-256: 805c908278760cb52592ebe05c56f3a9b53e27b6ece54c8cc4253f94aef23a03
font_01_sfnt_off0000f975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF975 10872 bytes
SHA-256: 964bb1ea35b1d05eb07ba42bdd9abc3eca68d1e76655d50290890b637791206f

Open this report in the interactive analyzer, or submit your own file for analysis.