Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c9ed4202b76042…

MALICIOUS

PDF

66.8 KB Created: 2020-12-25 06:08:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 94ad3af9fdad5a8ef7a2dab6e78d2a8b SHA-1: 9ff1e7ffeab17a8b6c4644c63a054b891b4030a8 SHA-256: f0c9ed4202b760420bf91848bb0932eb415dc85554daa811148b97d050e4673e
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://trafftec.ru/aws?utm_term=antistress+relaxation+toys+full+apk', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'Antistress relaxation toys full apk', aiming to trick users into visiting the malicious URL.

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://trafftec.ru/aws?utm_term=antistress+relaxation+toys+full+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459776/normal_5fa7ebbc08512.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369763/normal_5fa7f88acc01d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373779/normal_5f9b858b18177.pdfIn PDF document text
    • https://jefifekelu.weebly.com/uploads/1/3/4/7/134744422/5994043.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384307/normal_5fb7b5eba027d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416786/normal_5fa1e8ae81624.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/750fb007-a45a-4c35-ba0d-2cf37edd2225/19804455926.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/68346684289.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0de7150c-a304-4ed7-a964-9f3272e7ec23/descargar_pokemon_mundo_misterioso_e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9361aaa4-3773-4e86-b3e5-8ea0c6af37e3/nafovupetujam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7186ebca-d607-4ffd-bc0c-85f178a48f5e/vigo_county_school_calendar_2020-21.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/acute_bronchospasm_symptoms_merck_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9636e83c-0d95-4e5b-8002-b2745d32bbba/good_news_bible_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/22103312134.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_off0000c9e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E1 5116 bytes
SHA-256: f9df523d84e008d28f6c43aed0918454933f40bbffb3c61ce693fe7b29041def
font_01_sfnt_off0000db6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6C 10200 bytes
SHA-256: dbd6ba5c123d2e02d2bbcfebb0932c4bfad34420e175182ce0ed9b1827a047e3

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