Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f4792e3a4b75f82…

MALICIOUS

PDF

79.0 KB Created: 2021-03-30 08:56:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b61849afc1b9161e82c079da4217376 SHA-1: 94da7d18e5c2887538d9b5ad41eeabefada68de8 SHA-256: 6f4792e3a4b75f8229668c73a5f3d11cde5e755a056a6d7d1a9b5fd0fba12b02
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or credential harvesting scheme. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=american+red+cross+first+aid+exam+answers
    • https://girakojazesu.weebly.com/uploads/1/3/4/6/134675992/bunobezani.pdf
    • https://cdn-cms.f-static.net/uploads/4411926/normal_60327336e5daf.pdf
    • https://static.s123-cdn-static.com/uploads/4369788/normal_5ff666d0873a1.pdf
    • https://cdn.sqhk.co/sazalevimit/iaieUgi/15132344418.pdf
    • https://cdn-cms.f-static.net/uploads/4476146/normal_603d079d7c197.pdf
    • https://xepevuke.weebly.com/uploads/1/3/0/7/130775471/zipezizexig-lesosexubaru-mazefuzisudufis-kolulenu.pdf
    • https://wawokosekipazas.weebly.com/uploads/1/3/1/4/131452886/7766095.pdf
    • https://cdn.sqhk.co/nebafori/gfcxKhd/pool_game_free_download_for_android.pdf
    • https://cdn-cms.f-static.net/uploads/4464732/normal_6027bf4b6c742.pdf
    • https://cdn-cms.f-static.net/uploads/4383929/normal_5fe72cc7c5cb9.pdf
    • https://cdn.sqhk.co/dunuxorigu/v1gjEjb/rijave.pdf
    • https://cdn-cms.f-static.net/uploads/4469365/normal_6061fb98b7d9f.pdf
    • https://vomimefime.weebly.com/uploads/1/3/5/3/135316042/5cf99.pdf
    • https://cdn-cms.f-static.net/uploads/4470689/normal_600a82a00d234.pdf
    • https://cdn.sqhk.co/rozesivotix/SmmhhwO/52258116386.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c25c3111-83aa-4d33-bfa3-9047aebe9f6b/gone_with_the_wind_paperback_book.pdf
    • https://s3.amazonaws.com/penale/catia_v5_format_file.pdf
    • https://uploads.strikinglycdn.com/files/202e75b6-a467-459e-97de-bd972330f4cf/ccna_routing_and_switching_notes_free_download.pdf
    • https://uploads.strikinglycdn.com/files/2c96ce7e-398a-420c-a9ec-a8dcee7c66d8/pak_army_officers_protocol.pdf
    • https://uploads.strikinglycdn.com/files/06050393-71f0-4c67-b426-8916f8af6600/puvukidizelenalujegexim.pdf
    • https://s3.amazonaws.com/rekorewexidiwo/39114457253.pdf
    • https://uploads.strikinglycdn.com/files/39fe130e-7981-4d6d-b2e3-56f8e3b1a2f2/basic_circuit_analysis_mcq.pdf
    • https://s3.amazonaws.com/makumapikeze/aashiqui_2_picture_gana.pdf
    • https://s3.amazonaws.com/dobesogum/boerne_lake_fishing_report_2017.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5cf.bin
cbe858ce176f332490769fcd9421f4f9968c14afb1182967fcf8b63327e11535		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CF 5284 bytes
font_01_sfnt_off000107c5.bin
5142fbaee408bdac52cfc40310456d697955b210f6dc446d4a11397a4a68c050		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107C5 11240 bytes

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