Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f9e224ff99237f…

MALICIOUS

PDF

81.5 KB Created: 2020-11-09 22:40:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d7f1501e084516fe314c33d83952be9b SHA-1: d2f97b4d7689e2db603ccdfd6f70d672d0ac31fd SHA-256: 60f9e224ff99237fbda7f70d00a0dffda8ffce8fd59d642d5869cd46a888932d
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 0.9997

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://traffmen.ru/strik?keyword=tiberium+alliances+guide In 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/a0b83c41-4f3b-4acc-9304-c0759b512d19/recibos_de_caja_con_cfdi_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2abab004-706b-4d8e-9a59-4815f21eecf7/26586932996.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b868d72c-6915-46a2-9501-ba4e7bd26d27/59701251019.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/vavogasezuwozulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be4e66e7-0b40-4386-89c9-727f8cc60011/gezizovitijudifeset.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/awestruck_cider_hours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56a80f15-6cdb-4876-a9e4-d6ccd85463fd/53898843288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c9b367b-52b5-4c9a-af60-4212b9d3adbf/82641819713.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/xukusibufa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/320fa843-ed00-453d-88d2-7557934a0fa8/morijubolorotovijuzepalag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/203763bf-706a-441f-9f9b-f9ddbbf3d27f/dukopuvexijapujajiruzine.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3E 5348 bytes
SHA-256: c0ff94e8acff49df18a16063d1fb11f3ddc0cb0ff4417907e2e4e96ea286fd5f
font_01_sfnt_off0000fd45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD45 11144 bytes
SHA-256: f2f3f5cab14db4b2ee411633275e9c189dd4ed2e5aec54aa1ecafb2885de850a
font_02_sfnt_off000123a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123A8 16340 bytes
SHA-256: de4d8b2f57bd79f1a868fabda613d9936b110e31710edd4728466090b424b6ff

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