Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf7a4c9084baec76…

MALICIOUS

PDF

72.0 KB Created: 2020-12-01 09:09:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: a01d1d19d4c5d39bd0134243f78520fc SHA-1: d5ee469057d6495b41e9f16ff88b8b8d1df03f93 SHA-256: bf7a4c9084baec7668e6816d93abfd45aaaf8c78dfb480d53052dcf08c43cbb9
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or SEO manipulation attempt. It contains a large number of external links, many pointing to PDF files, suggesting a link farm strategy. The embedded URL `https://traffnew.ru/aws?utm_term=movie+nayak+anil+kapoor` is likely part of this scheme to drive traffic or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/aws?utm_term=movie+nayak+anil+kapoor PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376120/normal_5fac415b1f736.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382208/normal_5f9343ed7f74c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384640/normal_5f91d23f2f342.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f871ed1ae084.pdfIn PDF document text
    • https://ronurakegilapoz.weebly.com/uploads/1/3/4/8/134852428/difurip.pdfIn PDF document text
    • https://puxezemugip.weebly.com/uploads/1/3/4/3/134311794/xenunikoxixin_nopebeka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374379/normal_5f8ce79b1a815.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://s3.amazonaws.com/wejalixex/world_s_most_poisonous_spider_bite.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/61760525731.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e0f04f4-cfde-460e-9d1c-1c983afecfe4/kikomupuvozadujipuma.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/direct_variation_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/the_daily_commitment_report_peoria_il.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/assembler_fichier_en_un_seul.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/61193892452.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/cordis_central_line_cpt.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/notolesizurumokepo.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_off0000d1c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C6 4576 bytes
SHA-256: 5f63a0149c7201f2927831e71c2b1c9d5a5672730d887b731cffe2a2b8fe6784
font_01_sfnt_off0000e15f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15F 10344 bytes
SHA-256: 0d5f6ffc8d2b6c432faec0bb0046007484cb075ab6fb1806cfec5dd4fe280008
font_02_sfnt_off000104c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.