Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ca2be0f149e0eb…

MALICIOUS

PDF

76.3 KB Created: 2020-12-18 06:32:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4f2fe1b398c96b1b31f6ed2267680475 SHA-1: d2155f05ecd151b4628ac5d6d70966071b3481ec SHA-256: e0ca2be0f149e0eb219c70d1070ae3a36bc0aaa7c9bf74af3dddaf972b4117a8
156 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The presence of numerous external links, such as 'https://trafftec.ru/123?utm_term=interaction+among+living+things+worksheet', suggests an attempt to redirect users to potentially harmful websites. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports the classification as a phishing or malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafftec.ru/123?utm_term=interaction+among+living+things+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495400/normal_5fad901f1a21b.pdfIn PDF document text
    • https://zabagazepag.weebly.com/uploads/1/3/4/4/134498959/062c0841fc53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_5f8e3e89abc96.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc0f4078787e879896c419e/t/5fc2c7d93f75b166432ff4a8/1606600667537/fly_gps_hack_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11c6aec917750a3d920aa/t/5fc406c3173fb5383b20d2e2/1606682308491/fern_rock_station.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe187418e72e5fdb9f1eb4/1606293630100/12872130747.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52d2ebe9b69395126b4b8/t/5fcaa6a01694195faaa6255a/1607116450201/70032817267.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe33fc3f75b166439fe9af/1606300674282/la_crosse_wifi_projection_alarm_clock_setup.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4eddadf132613bbd766a4/t/5fc504e8f81c9a2a0c408418/1606747369558/binuni.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc12254405d5340f32af944/t/5fd11c6cceba9f37aec1e5c8/1607539821406/turkey_drumstick_recipe_air_fryer.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c73cdf132613bbd6778b/t/5fd66c94164d0f203c7d042e/1607888020462/chhota_bheem_hd_video_2018.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB5 2960 bytes
SHA-256: d8ef148c594adba1946aa7d95f188f3f33f69c77bc22762a1a4a57bcfd89a796
font_01_sfnt_off0000da37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA37 5152 bytes
SHA-256: 1d1f9328d208685961bc0de0d8711cabce1f9d1286ce6560b6502a0428710bc2
font_02_sfnt_off0000eb97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB97 12948 bytes
SHA-256: 97570bd535cdaa6ebf10ad7d5c1b3317070c74cd22c05cc9e94dd9e0104abbef
font_03_sfnt_off000115e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115E9 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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