Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c370ce58768c7cb…

MALICIOUS

PDF

74.4 KB Created: 2020-12-17 03:07:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 60fb65f2ada3855e2c5251d777e8db2e SHA-1: d8725a50b27f3d5f31edb2f4e0a4d56e0c312b4f SHA-256: 7c370ce58768c7cbeec7ab17a5e37b2fe3d7af63ff84b3e7fe65d69b59b4cfda
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ggtraff.ru/strik?utm_term=ejercicios+de+atencion'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/strik?utm_term=ejercicios+de+atencion In PDF document text
    • https://neboxikadifi.weebly.com/uploads/1/3/4/5/134588308/rajoruk.pdfIn PDF document text
    • https://fimopokiwuzik.weebly.com/uploads/1/3/4/7/134736862/1231604.pdfIn PDF document text
    • https://zukigepuzena.weebly.com/uploads/1/3/4/5/134593101/wisafiruteraxudifa.pdfIn PDF document text
    • https://ruzejeparofilag.weebly.com/uploads/1/3/4/5/134582671/xikoni-gotinu.pdfIn PDF document text
    • https://zokemubolito.weebly.com/uploads/1/3/4/8/134895641/dodafazu.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/wupiwupiwot/pdf_reader_magazine_style.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7833d43c5ee75bf2ca4ba/t/5fccc21a920f47545b9129a2/1607254560108/trivia_iowa_city_tonight.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce1a68e5a13e2fea6e0c32/t/5fcef28d0496d067bdc699bf/1607398029724/live_football_tv_streaming_hd_apple.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/basixebinavetuboxudige.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/21769023717.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54038c89e1c4b8fdb3a59/t/5fc80accd6b05e2652802752/1606945484223/stock_car_racing_experience_promo_code.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11a296b97992eb55d442c/t/5fc52dc23c02f22b9db37f86/1606757831137/wiretetejawu.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/56159587723.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc65777e9fc3622d5470b25/t/5fd1f37e071bbc68802e615f/1607594879515/vodafone_yan_mda_bedava_internet_hilesi.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_off0000e747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE747 4936 bytes
SHA-256: e2cab6859644da4a458b07deba39335f6c0e663fe754c95be9b108cc3ca43f84
font_01_sfnt_off0000f820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF820 10740 bytes
SHA-256: ab6e7b7f3c310cb2fd2e3d5bb9ab365ec6467169c46f911ae6970285998375cf

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