Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc65672245cb3fe9…

MALICIOUS

PDF

68.7 KB Created: 2021-03-16 06:17:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: fdbb178d11ba6f10c014173842932d54 SHA-1: 553702e64d86bce971f7d610dc4c1ee96ff7b3c3 SHA-256: fc65672245cb3fe945fa8096e4ac30f3b85a4d7e86f8f59224aad02f5601c8a4
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://yafferge.ru/wix?keyword=palm+beach+athletic+wear+and+yoga In PDF document text
    • http://pikaromabunoteb.iblogger.org/black_tie_guide_gentlemans_gazette.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377407/normal_603769778bf6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389821/normal_5fde09843a40d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470028/normal_5feea279c4ede.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447251/normal_60463e6bb89e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483623/normal_6029ecfb62349.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412593/normal_602eee640cfad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443588/normal_6036be5f84c08.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/219da266-c9d0-4010-acff-47d3336346d1/54007149239.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c3ae1a8-9851-4563-889b-9e939ef4c59f/graco_milestone_3_in_1_car_seat_infant_to_toddler_car_seat_gotham.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d562a0f-e485-4e6d-a198-1347387f6f65/anthony_santos_popurri_en_vivo_descargar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c05a24a-6200-4594-b7dc-ff20c427298b/an_introduction_to_language_2013.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c722355-faf9-4cbf-a9ed-adb0ad68ddd8/jedigijug.pdfIn PDF document text
    • http://rovunebezub.epizy.com/westlife_song_unbreakable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38536da7-35a7-4abc-b3e1-de617df81b64/devakavadamafimagip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5176d4a9-b34f-4010-bf08-9f3d8908b2d0/xabunumubun.pdfIn PDF document text
    • http://bijasubibivov.rf.gd/template_letter_of_acceptance_for_contract_award.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1f16601-e1a1-480e-8258-636d29a80ad0/vapigigimoxoresepetu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a91de0a6-4d84-43e7-ab4f-0369d8100f8d/10690253037.pdfIn PDF document text
    • http://kuwemujureza.epizy.com/19920370979.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/538b4f0c-4708-45a6-a06a-c564ed0bfacb/anatomy_and_physiology_2_lab_practical_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cd4344d-30f5-448f-bb79-f2e65348253f/72725493311.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_off0000ceac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAC 5508 bytes
SHA-256: f5ffd81125b0d59612e8be03dbcc9a04bf3ca8681e5e38aec00f0987b5c91442
font_01_sfnt_off0000e157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE157 10720 bytes
SHA-256: eac72e224a8a7a4d5b3ac7a7e0c521de458ed99a650b088907fa366711002213

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