Malicious PDF — malware analysis report

Static analysis result for SHA-256 61e04fb798efd2af…

MALICIOUS

PDF

67.5 KB Created: 2021-02-23 15:53:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c5eac1974df5b15ace90c8b808bec875 SHA-1: 18217602ac79ff9f075563d092312ec1dde97b67 SHA-256: 61e04fb798efd2aff0bc23561e9b8f78e0030f7611e294c1f91da86cfe7d451f
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 0.9998

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
  • 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://jacksth.ru/123?utm_term=samsung+scx-4623f+manual+feeder+paper+empty PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375528/normal_5ffc7fbaed0b8.pdfIn PDF document text
    • http://prostotit.site/47403717401f8d23.pdfIn PDF document text
    • http://roman-holidays.shop/compare_and_contrast_essay_topics_3rd_gradervpeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485578/normal_6017f6af410fa.pdfIn PDF document text
    • http://mnogolidov.xyz/weblogic_server_12c_downloaddxm75.pdfIn PDF document text
    • http://fullcreditreport.info/83015272469w8h14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374188/normal_5ff829057327b.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/pusori/oregon_boat_ed_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/gamca_medical_report_check_online_pakistan.pdfIn PDF document text
    • http://gogositanisewu.rf.gd/kivukunafabaf.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/vivaldi_old_version.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/sindhu_bhairavi_songs_free_masstamilan.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/wadafubevidid.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/vugawar.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/satelozibinewikij.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_off0000c8db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8DB 6316 bytes
SHA-256: 5f14035253ee14e623b86a5fece3f5d328cf28ba4a600f3deb180e229970ca2c
font_01_sfnt_off0000de5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5D 10020 bytes
SHA-256: 0d2b123be38fb41a78c5a5e385b342ff83adeb0f3a355d9b563414e4caddcb7c