Malicious PDF — malware analysis report

Static analysis result for SHA-256 db4d00b58c60b4fd…

MALICIOUS

PDF

80.2 KB Created: 2021-02-14 21:41:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9365ae198ad7d3dabe40242d7503c41f SHA-1: e473aec46bf2dcc1c25c6ef8ad86b658f202b9ec SHA-256: db4d00b58c60b4fd9c0abbaa29a5e6bfdcefecedd7af346846381476025d44bb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to an 'industrial revolution topic study guide'. No scripts were extracted, but the presence of embedded URLs and the malware detection strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wix?keyword=the+industrial+revolution+topic+study+guide PDF link annotation
    • https://cdn.sqhk.co/jinokazif/jhfTgi0/nice_cheap_button_down_shirts_mens.pdfIn PDF document text
    • http://free-at.pro/78061183570d1d8h.pdfIn PDF document text
    • http://workbykoder.xyz/pomiguriropanisumovijamorqckrl.pdfIn PDF document text
    • https://cdn.sqhk.co/xaripisi/a7ngcr0/sushi_cat_2.pdfIn PDF document text
    • http://ukranews.site/bupupikonisozowhsasr.pdfIn PDF document text
    • http://itagreen.fun/global_aviation_industry_report70qx1.pdfIn PDF document text
    • http://cosmicgig.com/37158724072i44d8.pdfIn PDF document text
    • http://bestrongbyg.com/admin_templates_bootstrap_4_2019cg8yo.pdfIn PDF document text
    • http://carbackseat.site/29946219689r7rlb.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/japjfgc/gaxuwudenemuzo.pdfIn PDF document text
    • http://xtreme-sport.ru/6294588569ae5qs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lipidusixul.rf.gd/bumazizu.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/find_childminder_ofsted_report.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/xopinatiwexile.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/66610817361.pdfIn PDF document text
    • http://fefisapuvekebi.epizy.com/webassign_answers_calculus_1_section_2._2.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/guzaguropanireravoxobopan.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/hdfc_ergo_general_insurance_motor_claim_form.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/apple_typography_guide.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_off0000fe19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE19 5444 bytes
SHA-256: 63c3f332501d848ab31670b2b078db9537ebae0259bfb9e6f9733d9e4c95e78b
font_01_sfnt_off000110a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110A6 10208 bytes
SHA-256: 5b4e5d3cc58d090c94830664025a4e33229a905216c4e9bad30677787e0c1c86

Open this report in the interactive analyzer, or submit your own file for analysis.