Malicious PDF — malware analysis report

Static analysis result for SHA-256 f13fee4898b217f2…

MALICIOUS

PDF

81.4 KB Created: 2021-03-26 03:54:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9fde1b45fae1630dc303ede28f34bf4 SHA-1: 24bcb81987fa3f2ac2bc2e1d915862109e1a9e59 SHA-256: f13fee4898b217f260a7b3dd7e6075f9da9271d46b821f5b39ba3a65abdb3ba6
96 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a URL that is likely a phishing lure, disguised as a free download. ClamAV and ML classifiers strongly indicate maliciousness, classifying it as a phishing trojan. The presence of embedded URLs and the overall structure suggest it is designed to trick users into downloading further malicious content.

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://jumiwimov.ru/aws?utm_term=highway+capacity+manual+2016+pdf+free+download
    • http://copyright-notice-ig.com/potemikevlq.pdf
    • http://bamuwapinofaro.iblogger.org/tmux_cheat_sheet_for_mac.pdf
    • http://olivamebel.com/graphpad_prism_5_download_gratisye8vo.pdf
    • http://de-bewertung-id-q2e5t23.top/who_is_responsible_for_the_affordable_care_actump5a.pdf
    • https://cdn-cms.f-static.net/uploads/4393358/normal_60593a09b196a.pdf
    • http://kellys.space/cgegis_rules_1980_download6clcv.pdf
    • http://fumatiw.mypressonline.com/dasoxevisipidifini.pdf
    • http://kigetipopizatij.getenjoyment.net/tijawadixegen.pdf
    • http://digitalmicroteter.xyz/emerald_green_bubble_mailersohq52.pdf
    • http://furniture21.online/yardking_self_propelled_lawn_mower_partsur4d9.pdf
    • http://ipatovaalena.ru/98766874548w3cht.pdf
    • http://negifowutagur.mygamesonline.org/navox.pdf
    • https://static.s123-cdn-static.com/uploads/4420238/normal_5fed327649d5c.pdf
    • http://clubstore.info/wovasagolipunequk6i.pdf
    • https://cdn-cms.f-static.net/uploads/4383791/normal_60384c2ed3eee.pdf
    • http://masajsalonunuz.com/dialectical_behavioral_therapy_near_meok5p3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://manosotidokef.myartsonline.com/30961904109.pdf
    • http://fiwabafedazuv.epizy.com/zofod.pdf
    • https://uploads.strikinglycdn.com/files/f6caef7a-1e47-4d5e-a480-04042f709ee9/forte_pitch_class_set_table.pdf
    • https://uploads.strikinglycdn.com/files/19969f9e-a34d-4ac5-a6ce-0e965cace749/37093759639.pdf
    • http://gapexer.rf.gd/dopajubiviwumaxilep.pdf
    • https://uploads.strikinglycdn.com/files/4b3d8205-4a43-479a-9bcd-a7d0793860ef/10045394720.pdf
    • http://japivolenalu.epizy.com/depreciation_expense_goes_on_the_balance_sheet.pdf
    • http://moxixezegosa.onlinewebshop.net/pilasimitup.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_off0000fd57.bin
ae37c795d8825c5a27c0fd087d8235c794111738ad21e6a91bfb3797857e5ae0
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD57 6028 bytes
font_01_sfnt_off000111da.bin
67c6127543b00f664ae0de5e6925b7fb21ef46c59f5b494fc4a21fce607aba94
pdf-font-stream PDF embedded font (sfnt) at offset 0x111DA 11484 bytes