Malicious PDF — malware analysis report

Static analysis result for SHA-256 4304105e2d1a4389…

MALICIOUS

PDF

78.6 KB Created: 2021-05-28 20:06:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 68f32cea25147544db3963744e718438 SHA-1: e7ee100a1650650aca051a8e922c1e081baf9cb9 SHA-256: 4304105e2d1a438901792dd9ab94495641935c6f3a09bbaa3555256ab12307b9
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URL that directs users to a suspicious domain, likely to deliver a malicious payload or phish for information. The document body, though heavily obfuscated, suggests a lure related to Minecraft mods, a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/strik?utm_term=how+to+add+mods+on+minecraft+ps4+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473954/normal_5fe8415a346ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466166/normal_606c73937a6f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421218/normal_6011156ae1d31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403556/normal_606a5e1d970c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480876/normal_6036dad368038.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494433/normal_5ff9df3aa4210.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383449/normal_6029ddb64c818.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369330/normal_6051bc8635cf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470543/normal_606925e2b5dec.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/01866d95-a401-4085-9021-2fcb662a3630/dabukuwaxikigu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1429d5f-2e81-4e8d-98ae-fb2359a446fb/simple_arduino_projects_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99975a4d-61ef-4cf4-a0e6-9c93ad0390cf/zelemaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd82e94d-e277-4d12-b8a2-4fba0438d94d/ropirolalujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f846191f-4b06-4017-be8d-962eb5e09a50/falibilu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/729c96bc-a20a-4490-ae20-e695376152c3/oracin_a_san_judas_tadeo_para_casos_difciles_desesperados.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0e673cd-f09e-4992-b8ab-a8379a5ab845/gagafixogigexulimulu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/164c5e6b-0b89-4f7b-a4fc-ecab10274344/how_to_fix_an_open_limit_switch_on_a_furnace.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f67268f-5be5-48d4-b861-1c5b9fa71995/jomenagelemamosagoxasotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c11e6fde-b65e-49dc-bf45-ee1ee4bd2409/linksys_ac1200_quick_installation_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af071166-8a18-4b33-ac87-86ac23f7100a/john_deere_lawn_mower_parts_lookup.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_off0000f388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF388 5684 bytes
SHA-256: 873fbd059606507e04aa178c91ddaa5899699052f16b1614257066d7d5c8c96f
font_01_sfnt_off000106e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E7 11360 bytes
SHA-256: 7667098457cacc56c48c37b10d4d66483a3d819128933a275f6c017aeeaafe36

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