Malicious PDF — malware analysis report

Static analysis result for SHA-256 fccbed553a6bf0f8…

MALICIOUS

PDF

90.0 KB Created: 2020-11-24 05:56:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: a6def803dd053cd7feba61d938864afc SHA-1: ef3622bc0b992c9e0f9681ebdc5bbe00377cbde6 SHA-256: fccbed553a6bf0f892924e5f1709279b7ebf0ac00123d564d8d46da7632140b4
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'. ML classification also strongly indicates maliciousness. While no scripts were extracted, the presence of a malicious URL suggests the document's primary purpose is to lure the user to a compromised site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=smoking+status+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4461777/normal_5fb3f07a26b58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372753/normal_5f8d82919592f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f888743aa0c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471234/normal_5fb252637f77c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393358/normal_5f93a84fd2b6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376105/normal_5fb02cb4e8db7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408995/normal_5fa9c8bb5c112.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/892cf488-d399-4d41-8424-75a7e43062ad/lukagobupetufi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd69d89c-a41d-470c-86ae-7d608cb1d0d5/pexidikukigupuvazusudux.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/kuxaputawuxapakozovepi.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/wizanugunilutovamobe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdcaeabd-003a-4e05-ba8c-e60a0e9c7b91/22074813586.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/70261961599.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000119f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119F2 5220 bytes
SHA-256: c2d4e65bbbdc1774e52bfa1f3b7baa0199fa3db5e10a9b1afee9e4c5893f6bec
font_01_sfnt_off00012b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B9E 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off00013701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13701 10544 bytes
SHA-256: 99916077adea6deec02e79ef7d2c4fedfec275115d7c90be9c02310612625a49

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