Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ec5dde05947c91…

MALICIOUS

PDF

75.4 KB Created: 2021-03-19 17:52:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 5522e3e201d88d040b9858fa3b8b915b SHA-1: 16bbdf3466ce25d369686fbff95b12f3ffc0bef2 SHA-256: b6ec5dde05947c9169caaa523d6789d75cf1810a02e4fb496e76d50564c9e750
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that directs to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of an external URI and the overall classification suggest an attempt to trick the user into navigating to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://fokemale.ru/123?utm_term=apastamba+poorva+prayoga+in+tamil+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420602/normal_603b3651c1833.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401515/normal_6015ec7984f17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452389/normal_600f75148c87d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481072/normal_600bb81c7b355.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/fhhgeZG/setup_facebook_app_localhost.pdfIn PDF document text
    • https://cdn.sqhk.co/naxusepimosa/hhy5jbu/super_mario_run_2016.pdfIn PDF document text
    • https://cdn.sqhk.co/sunaxidida/aV4jijd/toilet_runs_every_5_min.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418781/normal_60032b83b8c44.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489835/normal_600146b59949d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479673/normal_5ff8dd30015c3.pdfIn PDF document text
    • https://cdn.sqhk.co/turovonunido/yCjijar/gamaxakipomulokoraxo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382960/normal_5fce145542ba8.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/16f463d5-a0c6-45b7-8b05-ea8c95d168a7/miss_peregrine_home_for_peculiar_book_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f17d5093-82b3-4bf6-85eb-9514287c63bb/google_sketchup_free_download_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd06ff5c-524c-4e7d-b9c2-3c110fe5b36c/56073655410.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bc32b0f-fbb0-4527-b281-f23446091c03/kirexumapidorakezuwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6811d47-4d8a-4999-979e-ffc7e850f004/language_and_sentence_skills_practice_answer_key_chapter_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5a295d4-11ca-47ce-8fb1-798bf2e16e32/pejuzuwaduxepozebanor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84e52633-f473-448c-9d8d-1be9f8184330/32816970886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/476eb653-ccb7-41a4-8329-466c1b527f1f/40162874931.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffede871-5680-4fbb-bc12-945a58392760/metiwexaju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee58db7b-673e-4ff5-b2d1-ac34b1e30ca6/motorola_sbg901_login.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d4b62e7-9478-4d08-87ba-197f64cdea57/what_does_bbg_stand_for_kayla_itsines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e92d32ed-0d8b-4d58-b87c-c4ee107568ae/5207069987.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_off0000e110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE110 5652 bytes
SHA-256: d873e65399e739be2ea187bd47d33c60dbb1d83b5343d63eef21665b6a5dfd1c
font_01_sfnt_off0000f43c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF43C 12984 bytes
SHA-256: 456d4cc365f933d6cec1de52027a16414ae693d45c6375664ece66c41fcf80d8

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