Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3684154e3e45674…

MALICIOUS

PDF

74.2 KB Created: 2021-03-28 07:32:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0960be3871e67a4fb0947d22adbba1b8 SHA-1: e65bc98d382fb60016fa7a4e3ddc135e831a9d22 SHA-256: b3684154e3e45674be9b4d95cc7c01f46e564513ef31532fc3d32c21b5c25aaa
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://jottigo.ru/123?utm_term=angular+deformity+toe+icd+10 PDF link annotation
    • http://kemijejanurag.iblogger.org/opencv_3_c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411919/normal_6005df6028b9b.pdfIn PDF document text
    • http://wepisoja.mypressonline.com/ronovexupudubaf.pdfIn PDF document text
    • https://cdn.sqhk.co/naludibeg/gjf6zic/tips_main_hungry_shark_evolution.pdfIn PDF document text
    • http://lozuzaragujeb.mypressonline.com/66273487307.pdfIn PDF document text
    • http://pifedalune.medianewsonline.com/whirlpool_dishwasher_model_wdf520padm7_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393485/normal_6023f676e32ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416930/normal_603ea3e4a85bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367277/normal_60209ea013ce5.pdfIn PDF document text
    • http://pakekoramiduwin.getenjoyment.net/el_si_de_las_nias_resumen_por_actos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380084/normal_601425909de67.pdfIn PDF document text
    • http://mebimuvokos.22web.org/13567661967.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447487/normal_605714fa5b6ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_601b350dc63da.pdfIn PDF document text
    • http://mijudivoxobo.iblogger.org/content_writing_jobs_online_india.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/eb0uDcx/guess_the_song_from_the_lyrics_quiz_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480753/normal_6006e319d8bd3.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/ebc6fbf2-ac29-49ef-bbf4-0e6f74e7fb49/97603909883.pdfIn PDF document text
    • http://kakasis.onlinewebshop.net/electrolux_vacuum_repair_shop_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88b6ecdd-d279-45ec-be69-5fff21005ee7/c_programming_final_exam_questions_and_answers.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_off0000e28f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28F 5448 bytes
SHA-256: 09b31c6ac4c5b7cd97275032b0dc456d7ee91068a034687bfac7768b7debab31
font_01_sfnt_off0000f513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF513 11488 bytes
SHA-256: 93cfdb41ac34c9ae585cc92c5b1f51331b8e000773fca4ad6aae34599e6e104a

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