Malicious PDF — malware analysis report

Static analysis result for SHA-256 118566ec27340a07…

MALICIOUS

PDF

75.9 KB Created: 2020-11-20 23:42:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7d3c7500f43675b54825fa84459355c SHA-1: d18943f4b014fae222f1582e49d63ca45021636a SHA-256: 118566ec27340a07a12f4024984adb8b42082f245f4a7e43934bf7ac5b326a54
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL points to a suspicious domain, suggesting it's used to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffe.ru/aws?utm_term=splash+screen+design+in+android+studio
    • https://cdn-cms.f-static.net/uploads/4459628/normal_5fabdb810cf92.pdf
    • https://cdn-cms.f-static.net/uploads/4380523/normal_5fa1484c7d1fe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ff4fe823-d4f7-4323-92fe-fd7e16efc91b/xukizaxiwepodibuvavarotit.pdf
    • https://uploads.strikinglycdn.com/files/7fab440a-a353-420d-b158-c0aa11694320/the_words_of_my_perfect_teacher.pdf
    • https://uploads.strikinglycdn.com/files/a11dda76-61e6-4269-bfc9-c3ea37d6d3e2/kia_niro_user_manual.pdf
    • https://uploads.strikinglycdn.com/files/6474b935-f472-486a-87d4-a0b116f5e9a5/gibegipavorom.pdf
    • https://uploads.strikinglycdn.com/files/49537d89-add0-4360-9f6b-324c9eddecde/13952045429.pdf
    • https://uploads.strikinglycdn.com/files/27f99d79-fa10-435b-8a55-bababd7a771f/55490845642.pdf
    • https://uploads.strikinglycdn.com/files/99089d6b-78e1-4eb8-a423-e25bc48101a3/mighty_empires_tiles.pdf
    • https://s3.amazonaws.com/woxewiwupir/81084586749.pdf
    • https://uploads.strikinglycdn.com/files/edd5e2e4-1548-42f9-8a05-d60a5b5e1ef5/exemple_valuation_un_chaud_formatio.pdf
    • https://s3.amazonaws.com/jiwisi/hmh_textbooks_thinkcentral.pdf
    • https://s3.amazonaws.com/wixanarer/fish_body_parts_worksheet_for_kindergarten.pdf
    • https://uploads.strikinglycdn.com/files/3f0fad37-4720-493d-96ad-c9b7b63fb172/2020_science_olympiad_events.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d290.bin
3fa99db320b4df923f5ea857c2666f70ad9f5b203fbe113527b3b164be5f312d
pdf-font-stream PDF embedded font (sfnt) at offset 0xD290 5436 bytes
font_01_sfnt_off0000e504.bin
80f48c0fe7ebd12fcd2fe64a7f1dfd5315277b9b3866f173f22d0aaa5be646a4
pdf-font-stream PDF embedded font (sfnt) at offset 0xE504 12116 bytes
font_02_sfnt_off00010d93.bin
9853a4a918762215dfcba51349555ff48d39e56332efe18e2f333ca30d8a5b61
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D93 16096 bytes