Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a0c9343848bb2d…

MALICIOUS

PDF

70.4 KB Created: 2020-12-03 13:04:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 7ef71c7312e992a603e9f69a29f8989c SHA-1: 17d5884d7cd6cd7c7ef8b7c8c891ee12f761d2a4 SHA-256: 06a0c9343848bb2d206c0546a74d935d2db677f594a8d7e78da463195e7ef6e7
156 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics as a credential phishing lure impersonating iCloud. It contains an external URI pointing to a redirector, which likely leads to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into providing sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://tusukufuduma.weebly.com/uploads/1/3/4/4/134458322/pejegapit.pdf.
  • 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://traffset.ru/123?utm_term=legendary+hack+apk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379731/normal_5fc43504251a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f991489a179a.pdfIn PDF document text
    • https://tusukufuduma.weebly.com/uploads/1/3/4/4/134458322/pejegapit.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/f3394647-c17a-40f3-9012-3933d8a0dd06/soxigomeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87952ff0-3dbe-43f5-936e-b72b0da4d197/12814058926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f9a1ebc-467c-490a-b1cd-827aa221b30a/17965643852.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/gaves.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9eb1694-3196-4b89-98a3-e1664be1a96a/miami_dade_public_schools_graduation_schedule_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/papa_louie_2_when_burgers_attack_boss.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6b0d474-d633-4c12-b973-f34d622cc74b/lajixenibiliwazuw.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/amman_album_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/migivuforonakim.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_off0000d367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD367 5232 bytes
SHA-256: 068283e1d9c96fd90dd567827fabfd8da2cd4f4427224cf4b0c6fdd43153cc47
font_01_sfnt_off0000e541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE541 12864 bytes
SHA-256: 75c028970e99dc45351199995b70eeb04fd4644837d6b259e8d373395dc402de

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