Malicious PDF — malware analysis report

Static analysis result for SHA-256 b680a17cffa99071…

MALICIOUS

PDF

67.8 KB Created: 2020-11-22 02:55:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 70a9f78b3ae72588e8ee0fd66d51faae SHA-1: 7b4140643c0440989997c2c051ad9da057fbc790 SHA-256: b680a17cffa99071fd6acb6909b9e4645e14f2cc6b924d5f37d029e7ae490c5d
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 'ggtraff.ru'. This URL is likely used to host phishing content or distribute further malware. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious URL is sufficient to infer a phishing or malware delivery attempt.

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/aws?utm_term=o+saki+saki+song+video++pagalworld In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369142/normal_5fb39cff7dd25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371808/normal_5f93199e1912f.pdfIn PDF document text
    • https://sosegesidor.weebly.com/uploads/1/3/4/4/134465043/a97cd.pdfIn PDF document text
    • https://lowizozexide.weebly.com/uploads/1/3/0/7/130776176/4008283.pdfIn PDF document text
    • https://jevakotimafunu.weebly.com/uploads/1/3/4/8/134878594/2e270eae66386e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383928/normal_5f8dc5f537a22.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/leguvefu/weather_in_ho_chi_minh_city_by_month.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ffdfeb6-bdb7-41e6-bf44-12bc9e771978/vanumorokefataviji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e7639d8-2c13-415a-a27c-89513a6fd3fa/1856370552.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/sd_yadav_maths_book_in_hindi_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1c4d96f-5661-42c5-a1b2-b1512aa0fdb8/rerezuvukubimipaket.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/jilukiwemizi.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_off0000c962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC962 5372 bytes
SHA-256: d4314d078eef5877369baf6c9793681ee54b3d3268e2ffd82317bf7b3d12a5a7
font_01_sfnt_off0000dbca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCA 11364 bytes
SHA-256: acd6f25789118d6405730c692eca9d926ad1638c67c8b3e94781d6ed571ed0a9

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