Malicious PDF — malware analysis report

Static analysis result for SHA-256 5018babf8c87b207…

MALICIOUS

PDF

70.8 KB Created: 2020-11-13 02:15:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f99178333862312a32bb3f00d42e7fc5 SHA-1: dcbd560dbe8c9aacd02f9ba1d42311db9d20077f SHA-256: 5018babf8c87b2074cd06234e1af3ebfdc3a0cfb21ec28f3ff704a9f72a8d3ef
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 0.9992

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?utm_term=watch+lion+king+2+online+free In PDF document text
    • https://juzapojoxop.weebly.com/uploads/1/3/4/3/134370352/d954d963.pdfIn PDF document text
    • https://dotitikedobe.weebly.com/uploads/1/3/4/4/134493035/senitiroxikala.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389585/normal_5f95212582a9c.pdfIn PDF document text
    • https://lereviripos.weebly.com/uploads/1/3/4/6/134663640/68454ef64da2540.pdfIn PDF document text
    • https://fitakizegeva.weebly.com/uploads/1/3/3/9/133999514/5856647c8f6763.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383445/normal_5f969ff317998.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379961/normal_5f96fe39b2451.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/banula/90416010358.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/lidaraberutewebepuj.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/lease_agreement_in_spanish.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b1c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1C8 6744 bytes
SHA-256: 127b44c9f93874c96d25eb7ddc4688780d8877ce931cf296363fb5748d8d514b
font_01_sfnt_off0000c2af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2AF 5172 bytes
SHA-256: 3f509ca44abce6328f31952a73121083d8f6eb97c2346518da26fa020970f719
font_02_sfnt_off0000d45b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD45B 10568 bytes
SHA-256: 8ae9c72777fabe17d83c4958a9c12b2e4cfedbd93ffd2a8d4c1f8789047a8d15
font_03_sfnt_off0000f8d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D8 16208 bytes
SHA-256: 30cd58fcd8c9957a9355597858c90529375c8ffa67e1ef53de55cb5f342d3cd5

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