Malicious PDF — malware analysis report

Static analysis result for SHA-256 f11719b32b35f6f1…

MALICIOUS

PDF

73.7 KB Created: 2020-11-13 18:47:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 34ae464d0bd18255c4cd032d7dc06e9d SHA-1: 9bac05e354744e05d62b0f943ddb89ab314f6d6d SHA-256: f11719b32b35f6f1242e43793314b3f923d7b979deb2c0d27b36d687d4340f7c
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffmen.ru/123?utm_term=fps+mod+1.8+9 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4477626/normal_5fabc0e1b46a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f8c1cb52120d.pdfIn PDF document text
    • https://penulikadima.weebly.com/uploads/1/3/1/4/131482887/vibame.pdfIn PDF document text
    • https://wajusozoxedaxu.weebly.com/uploads/1/3/4/2/134235608/mageg.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/230b05b6-a500-4f24-8129-1aca07e576b4/9166469270.pdfIn PDF document text
    • https://s3.amazonaws.com/wepeliniru/cummings_study_guide.com.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc58e288-7636-4fdd-84ca-038b66d05f21/kearsarge_middle_school_powerschool.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/teresapefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f29fe09-eba4-4a33-b384-95d52d919e3d/avg_activation_code_free_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff1d6954-b104-4616-8186-2bb1702f087a/loriwon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21041344-d118-4a03-960e-7af385e905eb/39264680620.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/30036510301.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8B 5156 bytes
SHA-256: 20b819020bdf308247c4cdcf434d2da734ee93f74a0faf30649d7d0b58d7374b
font_01_sfnt_off0000e116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE116 10232 bytes
SHA-256: ce2a968651cef0c813107bbc0e6fbdc9e180fa489302fb24ca51719fe6e1098e
font_02_sfnt_off00010455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10455 16064 bytes
SHA-256: f7fb55aa7df24da556f1e6a14ff3e973b5c7274e6851c040e899454d18355684

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