Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5c8fde2688d909…

MALICIOUS

PDF

71.0 KB Created: 2020-12-23 10:36:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 510c86fb7ce683ee20be07d65cd59ba7 SHA-1: 3cc3edbbbaaffe57d4f18ceb4c3282089463e030 SHA-256: 9d5c8fde2688d909007e6c0b988ea34957f0fc9dda34787942061fbe14f35aad
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 indicates the document's primary purpose is to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=farming+simulator+16+mobile+fertilizer In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376619/normal_5fadf58c584a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383561/normal_5f8e9c0a5f85e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369648/normal_5fa215ec59799.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404133/normal_5fda237d7e76f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501998/normal_5fc18121861bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419626/normal_5fbec828f14ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446151/normal_5fe122888a20a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367648/normal_5f8dea8127b6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384048/normal_5f9b1a71051b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473890/normal_5fb2612c90e51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389376/normal_5f94c3eea527b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408865/normal_5f94ec2dc8aa0.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/426e72c4-f36b-48d7-a39b-a6461edc51c8/ark_survival_apk_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/9409114417.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/dipajomojafumuwuvak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb4aed48-6e79-4fce-8bd4-ba633d81aa6e/80762714717.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/79995803142.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/lizegiwasiwutuz.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B4 5436 bytes
SHA-256: f51bc04d86227183f3039157b0b1a100b50641b3923c6d55186444be860d7d99
font_01_sfnt_off0000e82e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82E 11364 bytes
SHA-256: d3b8b9a617b64552871cda587247d6fb4c7e2f1839632d4cae349464c8a7ba7f

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