Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ce6b0ada376936…

MALICIOUS

PDF

88.1 KB Created: 2021-03-08 04:24:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 4e2179ecd3c62d01bff03c9249f37116 SHA-1: b4d45a1ce2a792dbe0e1c16cfd14e19a0d93e0cf SHA-256: 93ce6b0ada37693610064a7f37ec4d84d6e5bb3f298677006e3051e3502360e6
104 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of an external URI pointing to 'vilenefex.ru' suggests a phishing or malware distribution attempt. The heuristic 'SE_URGENCY_LURE' further supports the phishing pretext, indicating the document likely contains urgent language to prompt user interaction with the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://vilenefex.ru/wix?keyword=casper+humane+society+pets+for+adoption PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4427795/normal_5ffcff944f8b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391896/normal_5fdca7769801b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418185/normal_5ff03b95c03dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452587/normal_6013794ec2cfb.pdfIn PDF document text
    • http://kofojoxake.mygamesonline.org/how_to_turn_off_alarm_on_timex_1440_sports_watch_wr50m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381344/normal_60312ae3f26f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369786/normal_5fd11dd03a8e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389108/normal_5fc6d62f3d4ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451544/normal_60229288c5065.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450723/normal_6007dacc6348d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384037/normal_5fe3fd6cd3232.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455645/normal_5ff88920c6daa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://8dfdba76-182f-4dc4-9dda-37a8c8d09dc9.filesusr.com/ugd/4ae4db_0dba1a7861004f8d80749f09acc3ed0f.pdf?index=trueIn PDF document text
    • https://cdb53ace-3f3f-41e1-823e-0ecf3add8ba2.filesusr.com/ugd/47e9e0_767fcbe4e3a04a4e8a6a334cd5bb38ab.pdf?index=trueIn PDF document text
    • http://tiluxusimutine.atwebpages.com/how_to_restore_the_ribbon_in_autocad.pdfIn PDF document text
    • https://e2a12503-e9f4-4898-9b1e-00959bf5a9c8.filesusr.com/ugd/1f0de7_9809cf8d1f6849b4b2902b32b4aae50d.pdf?index=trueIn PDF document text
    • https://77a80da1-97a3-4b40-ba11-54c6d232eb66.filesusr.com/ugd/39a0fd_912542f4afe14033b060f494803d222e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/957cb7a1-0018-406b-ae98-30c0c25cba64/29961075677.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01f1a5fe-1d00-4165-ae4d-3ace1b890192/the_game_awards_2020_time_philippines.pdfIn PDF document text
    • https://05491ccc-77c7-428b-9c25-74f2c6c50d4a.filesusr.com/ugd/d51d36_3832bd50976c42a99661f6aeae23228a.pdf?index=trueIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000129ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x129AC 17736 bytes
SHA-256: c9af32d3214eb73068c74f98c1447433856f2bbf186f3985b52461be7c01cf0a
font_00_sfnt_off0000f398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF398 5368 bytes
SHA-256: 2a541463005d1d29fe2ab71eb6766351b6c840cbef2c36861b3ba2fa565d1bb0
font_01_sfnt_off000105c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C4 10428 bytes
SHA-256: d65dcc97daf3d241a535df5844f3547506a50cfb7c2c98c979b5f575bf859160
font_03_sfnt_off00014441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14441 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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