Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed4bb8272197c2c…

MALICIOUS

PDF

156.1 KB Created: 2021-05-17 22:58:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: e13b4ce5c1ae51cc1bb753fc08a3f9ce SHA-1: 3d659d3c4b5ec68c20b771a5c2ff24aa135181a2 SHA-256: 0ed4bb8272197c2c217f7c700e39a0910d2f0b0eb33167df8b646904ea36b49f
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URL pointing to a suspicious domain, likely intended to host a phishing page or malware. The document body, though heavily obfuscated, appears to be related to the historical topic 'Why did Japan attack Pearl Harbor', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://mezovuduw.ru/strik?utm_term=why+did+japan+attack+pearl+harbor+dbq+document+d PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418192/normal_6031f3fb93ff9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482617/normal_606e057208bcc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366018/normal_5fe12578d7499.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425507/normal_600d61df18c6b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476418/normal_5ff691f2bec27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418791/normal_5fd60f39d9faa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375696/normal_602b0dfede1cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469643/normal_600af0143d702.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479226/normal_5fe3c7184b3a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451556/normal_602c0a79e51da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421468/normal_60062dc062dfd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444369/normal_5fceaa7f71f8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403937/normal_6061575ed8a29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480591/normal_6061f88167d60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_604b43536d2e5.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/cc340fde-8e8c-4646-a68f-d33db369cd7f/1533499990.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec5c5b90-365e-430a-9e5b-a37ca44f2ccf/88149930671.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48b2a807-edd0-4c1f-97c9-68f76390e9a0/does_christian_grey_have_aspergers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/084807b3-d595-406f-8a8f-47c0bc9c0ed8/92334925939.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc02c2e3-76f7-46f7-b9e6-7514ee8c1b3a/how_to_connect_a_microsoft_wireless_keyboard_3050.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/129aa9a4-5241-4a1c-94e0-295cef4b7b67/how_much_can_you_make_with_a_masters_in_biology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7e30ec3-0f69-4b05-8893-e644b558dfc6/71464011449.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9a04134-e097-4e07-8c70-ffc3135e733e/33726829231.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_off00022600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22600 5656 bytes
SHA-256: 60007aa3af584bfab1dae41ca825ae18319ca69b2a1dc9d41ef452d24e0118be
font_01_sfnt_off00023923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23923 12716 bytes
SHA-256: 3a21c2272f55e98ffac02c4871a4d3f88e7cb2ae16ee9381b3f6cb49d8a37965

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