Malicious PDF — malware analysis report

Static analysis result for SHA-256 714ba4be1ea2b701…

MALICIOUS

PDF

88.4 KB Created: 2021-03-08 09:47:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 9deb51d00c6b010fbd25a69cf048e622 SHA-1: 3ab098afa1052bc5e721eb2c1026502f128bb0b8 SHA-256: 714ba4be1ea2b701f538a1f719188b2d3ef6a6f7922f7adde47ce3e5301288b4
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when visited, likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to thermostat wiring, suggesting a social engineering tactic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://leonvi.ru/123?utm_term=how+can+you+tell+if+you+have+a+c+wire+for+thermostat PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393353/normal_603e34f7c9cfa.pdfIn PDF document text
    • https://budojidotepaso.weebly.com/uploads/1/3/5/3/135312143/575236.pdfIn PDF document text
    • http://wudazex.sportsontheweb.net/you_majored_in_what_book.pdfIn PDF document text
    • http://vaxiliwu.medianewsonline.com/black_boy_free_fire_stylish_name.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458124/normal_600f659a4cd9e.pdfIn PDF document text
    • https://dugubutufafug.weebly.com/uploads/1/3/0/7/130775350/2d12e.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/mojifoji.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/54462514912.pdfIn PDF document text
    • https://tivofemexire.weebly.com/uploads/1/3/4/0/134012880/5d6b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484375/normal_5fce283d67b86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451940/normal_6042ec332863e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379485/normal_5fd0ed3c8ca85.pdfIn PDF document text
    • https://pakitaxe.weebly.com/uploads/1/3/4/3/134318313/8c7b88e7ccba.pdfIn PDF document text
    • https://mubujibazakob.weebly.com/uploads/1/3/3/9/133986275/pisusade.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/attestation_employeur_exemple.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/zawagede.pdfIn PDF document text
    • https://7ffe38df-ef78-47a1-8632-a9c579db478a.filesusr.com/ugd/8ff694_4b01eb6a3321412aa0c5728f432cbcb2.pdf?index=trueIn PDF document text
    • https://336ddc11-c37d-4cd6-9685-7accad2975f7.filesusr.com/ugd/479fa9_29f23908405b47979a4d98f80ddb68b8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/vopiwitakuzum.pdfIn PDF document text
    • http://rulamiji.onlinewebshop.net/itunes_hip-hop_charts_albums.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/swamp_thing_2019_s01e08.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/zunegeletoriwidabikopova.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_off000110dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110DD 2996 bytes
SHA-256: 85ffa796c03edfa2d4a14bfa1a21048a01a1fcdcbe0d3a345460ef4c31b2d573
font_01_sfnt_off00011b9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B9B 5336 bytes
SHA-256: 4da4286c4ac35746d5be0c622268777a5cfe097dd4188b8efc542ab22fa6e218
font_02_sfnt_off00012db2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DB2 10948 bytes
SHA-256: 3abb2995b1a177720a1d9e9fdb0f43d89762f97f6eaedb6ec51700142cb14f47

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