Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d418865ebc046b…

MALICIOUS

PDF

364.6 KB Created: 2020-11-14 20:17:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0d64292366d863fd7129663dcdaa3f53 SHA-1: 5dc7c03403b183439fdb103eceed8852a7ac2501 SHA-256: d5d418865ebc046b63d1236b2648f93299522cc86fe5b1db60f5de772d82674f
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 lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL in a PDF document strongly suggests an attempt to trick the user into navigating to a harmful site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=new+hyperlipidemia+guidelines+2019 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371269/normal_5f9610e44c82e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376374/normal_5f94d8e649c9f.pdfIn PDF document text
    • https://vifoxofanope.weebly.com/uploads/1/3/4/6/134670603/fc362aed5bd7d2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f89337f8fe7a.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/vonuxagupeduze/all_aarti_sangrah_in_marathi_download.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/dekalb_county_georgia_marriage_license_copy.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/sigudokeguj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8904f62-f1e3-4a3f-b444-d7fc871bceee/novez.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/mims_medical_microbiology_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e70efeff-f85e-4631-9fe2-2a802e72b7bf/lowomokurojunutadefajow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/265357c5-988b-43c3-9447-fb95bee4163c/bubopupaderineza.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_off000561a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x561A4 6016 bytes
SHA-256: 56542e1bb63e67f36369edc7f1f80fc87be3c9762d103da9d889bbbe8ac157f3
font_01_sfnt_off0005760f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5760F 14796 bytes
SHA-256: 82237e45c5e0b4d1567b5c1068ecf52f15b4ed151e977b6c60866c5f17189d98

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