Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e8842356a67bce2…

MALICIOUS

PDF

82.4 KB Created: 2020-11-17 09:47:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 99bc8fadf8452eadf3ea7b9908bd6b63 SHA-1: d2456534e30f4a0a5f9bdf42bde78d2f21c29f01 SHA-256: 1e8842356a67bce2c0b47cc555a4b45f7a1da76b1a93d0ca69a0057e016679c3
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of an external URI and the overall classification suggest a phishing attempt disguised as online content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafficel.ru/strik?utm_term=read+bobobo-+bo+bo-+bobo+online PDF link annotation
    • https://ximixejolulozo.weebly.com/uploads/1/3/4/3/134351986/lodijejiropogu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445745/normal_5fa21cbe6b485.pdfIn PDF document text
    • https://jamafijuzu.weebly.com/uploads/1/3/1/4/131437216/4633433.pdfIn PDF document text
    • https://dizuzoboxok.weebly.com/uploads/1/3/4/3/134351397/65c250.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/49c4d504-b541-431f-b7d0-fbe1e89ef07b/55797961090.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68ffb922-65aa-4928-91e5-364bc2733eb0/jebek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f398eee2-d72d-4db1-b6b8-d69b124669b8/67369280183.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb44254b-80c9-4f5e-9008-c3f98acae989/68392729848.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/triathlon_races_2020_washington_state.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3623deff-8084-410d-9386-5be5a4e4aa6f/83724996596.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/79488265880.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93664551-4526-486a-8206-4823293445d0/sopig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc66350b-4072-43ab-ba83-a00a52a5dbde/dg_customer_first_survey_to_win.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD0 8172 bytes
SHA-256: efffb69faafadb03210468932113448423c7ad633d9678d186511d10a9745731
font_01_sfnt_off0000f66a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF66A 4724 bytes
SHA-256: 0b22f615deaa206538ebb1d1aab8ac5f32e5facc8d80acfd61a772dad1184cc8
font_02_sfnt_off0001068b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1068B 5672 bytes
SHA-256: dbfa5413c1a9c227ff4952054b5b0b4ac96982f99bb483e8315c477d4481d2cf
font_03_sfnt_off0001149a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1149A 11268 bytes
SHA-256: bfafad6a269045d3af343bf570a70256614072cff203c8741917938abbb6b86b

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