Malicious PDF — malware analysis report

Static analysis result for SHA-256 320c16240cc0852b…

MALICIOUS

PDF

73.5 KB Created: 2021-02-19 05:42:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d3b7a15daeae5c1ff20456f4868e5e07 SHA-1: 0b2b6562af711ea2acc10bf9f3efb2c64b4dd752 SHA-256: 320c16240cc0852b88f62f1d559195604c20c511380f45ef01956a44f17a1859
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 0.9999

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://leonvi.ru/123?utm_term=excellence+punta+cana+beach+reviews PDF link annotation
    • http://phrensy.co/online_photoshop_apkbsllx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450158/normal_5ffe414681b88.pdfIn PDF document text
    • http://itsamorem.com/26619174777g6rmu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479688/normal_602f1ae828d5a.pdfIn PDF document text
    • http://useraisins.pro/how_do_you_determine_the_age_of_a_heil_furnacelt8ne.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384460/normal_5fd0e8b68cc1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471099/normal_6027efdfb7a16.pdfIn PDF document text
    • http://webmastervlad.ru/votonoruginumiroworivisozar2vm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404105/normal_60081a3bc47b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467274/normal_5fcef34a8c6a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367650/normal_5fc97de573c38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460477/normal_600d44447d868.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484115/normal_600905fcd03b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408984/normal_602807ddf0df9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419851/normal_60121988a6f16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406806/normal_5ff6226476c57.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/saxefi/26734188554.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/free_email_list_2018_south_africa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE184 5336 bytes
SHA-256: c3ed24227370f63cc1561552981d3a00eecf60b389f73aa52550e4dfc199a6f2
font_01_sfnt_off0000f3b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B9 11032 bytes
SHA-256: a2a82e1bca13b822dad5bc0a75bc2b3e49e9797afebd1974c20381bc7b84595b