Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad425a4be5060f9d…

MALICIOUS

PDF

89.1 KB Created: 2020-12-21 20:51:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a7c40fbe11aae9b89d6532b88f1091ba SHA-1: 1b5218da2402acc938e1a533f2a1e95ead81c482 SHA-256: ad425a4be5060f9d646f9ecc961acf1c753e3082c6d53619a9d534964afc30cd
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic and ClamAV detection. The embedded URL is designed to trick the user into downloading a game, likely a lure for malware. No scripts were extracted, but the primary malicious action is the redirection to a harmful URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gettraff.ru/strik?utm_term=highway+car+racing+game+download+for+pc In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383805/normal_5f97c8b51c671.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446782/normal_5fcb7606c8587.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477139/normal_5faabf1424d45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500883/normal_5fdb6eb0e6b11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385847/normal_5fa14fb3a55e1.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/wonoti/25738617898.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/writing_a_thesis_statement_worksheet_middle_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56298550-49fb-4b61-9c04-bb507d53665b/36831695926.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e149f748-6d6e-47f3-9265-2c23cecc2a26/16568205009.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/373a8b55-bdb7-445b-bf80-5d170f2c7582/xeranesukirixifomit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37f47225-578c-4e00-bb45-8f130bab38c1/dangerous_woman_tour_setlist.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/zewogonolalegid.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_off00012003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12003 5548 bytes
SHA-256: 6723c19c7212e70bae9d63ac70e47d9b3632b352fcddee27315a174407b9edad
font_01_sfnt_off000132d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132D1 10688 bytes
SHA-256: e64eacc9d850be7d5f27e3588e40ed8534a3579a2c5012c7613f82e517e61b3c

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