Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc6ebe200b5683a…

MALICIOUS

PDF

67.2 KB Created: 2020-12-02 22:32:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5df558a8ae3e3019d51b4bc465219c46 SHA-1: 7743c0d4498ee40a7012f5f5e0e5c4751bbd4ffd SHA-256: abc6ebe200b5683a913bf668407b43f76f4134fe28af3fdbd155f723e9cade95
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for credential harvesting or malware distribution. The document body, though heavily obfuscated, appears to reference the URL's theme, suggesting a social engineering lure.

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://trafffi.ru/123?utm_term=mattyb+boyfriend+lyrics PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453103/normal_5faa2db98806e.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/bdf89ec3-d42f-4e01-a809-2b510d6243c5/rozubugujerebetekadokalus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85981599-9938-4305-8a31-e795de787732/mepoloviviwiwomerekipugap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85945e09-d9a8-4acb-9e42-f8a1662419a1/reddit_ingress_passcodes_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1f96c14-4297-4396-bfad-6d4456323323/64724061833.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96ce5f60-f206-4ede-bf4c-7fd59eb2e1f8/mysteries_of_westgate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b44a00ac-c9cb-4faa-b106-e69db59484f5/60266380665.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a2fbe23-14f1-4694-9187-48ed6e0130e8/brazil_sex_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97e50280-b6e2-44fb-9ed6-246d770e7c27/kevagizanavapaseliluwad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90704c35-e5e3-4907-aee1-21db4ad29eac/bladesinger_5e_unearthed_arcana.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/android_authority_huawei_mate_20_pro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d6c4bad-cf87-4e07-b833-a9a2b9b1a89a/physical_appearance_nonverbal_communication.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69422430-2588-4336-8aec-f6bf0dbbc83b/blood_orange_angels_pulse_rar_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/874b2b89-c775-4254-babe-1b3871af4091/manek.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC9F 4300 bytes
SHA-256: e11ca40f9cfd6006e0bda0e1032d934f2e641c3dedcb50c21f5a44bf244a2fae
font_01_sfnt_off0000cbb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB5 5260 bytes
SHA-256: 62d2897e8be7c520e3f9d02ef2be4f46bef26d6ce7e8ba38d099a27348626e2e
font_02_sfnt_off0000ddbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBD 9992 bytes
SHA-256: 67e6392dd21cdea301d534558307b1df4b5511bd3c28be107628129f46068589

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