Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e55cc54095f7be1…

MALICIOUS

PDF

74.7 KB Created: 2021-02-18 16:51:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6cf117df499e178f5d194ff9714b7b72 SHA-1: 34ccb93b1dc560154eb1135037d4ab5e9ff705dd SHA-256: 9e55cc54095f7be127b29d09996d8206a363c78537c35c228f94a4145ffde0e9
96 Risk Score

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 embeds external URLs that direct users to attacker-controlled resources. 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://baarspo.ru/wix?keyword=csun+spring+2020+catalog PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384464/normal_6002c624bb3ba.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/chighie/85885015530.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368481/normal_5fc9503eaf6e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450641/normal_6019fa737ec22.pdfIn PDF document text
    • http://geguxejap.22web.org/angular_4_template_variable_in_component.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414336/normal_6019c3f2bcbeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://jizokiw.rf.gd/should_be_fine_meaning_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/action_3d_telugu_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/bestanden_delen_iphone_android.pdfIn PDF document text
    • http://netuvorib.epizy.com/34188950206.pdfIn PDF document text
    • http://vemusimovoxodan.rf.gd/wifowe.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/lenerobubose.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/labavididexo.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/la_la_land_audition_piano_sheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2B 5160 bytes
SHA-256: 5f6fdde85b69e718e3790cec6394acfa916c697f365c530b56b6495e5bef7544
font_01_sfnt_off0000ecb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB3 10284 bytes
SHA-256: 427e0f9dd4a426483ff25780d6cc2356c015089432cb93154ea299a2537184a1
font_02_sfnt_off00011010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11010 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f