Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99976e9c553595a…

MALICIOUS

PDF

71.6 KB Created: 2020-12-14 06:29:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a0f9844e86799a13d10850d5d52b588f SHA-1: d15d82d6bb9ca6417ec4f04228ce1c5c50114eff SHA-256: f99976e9c553595a72a121fe65f219b5595d5ef114ac47d048fd511c60beab50
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a link to a suspicious URL, identified by heuristics as PDF_URI and EMBEDDED_URL. The ML classifier and ClamAV detection strongly indicate maliciousness, with ClamAV identifying it as Pdf.Phishing.Trojan. The document body, though partially obfuscated, suggests a lure related to "7 sins of greenwashing examples" to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/strik?utm_term=7+sins+of+greenwashing+examples PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d253f7f2-b4af-457c-b824-3973c8ad2850/popular_italian_girl_names.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7becdec8-29f0-4d70-929e-9993dcc36517/91689650228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39a7bf56-079e-45d9-9970-ccf9774e5043/thank_you_mr_falker_free_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/blank_space_our_last_night.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc118f0bdb33045eec37880/t/5fca3ba9ee6dcf7e363d3a0d/1607089065320/45662319659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad314ac9-3b41-41fc-8a6a-62f9d9dff662/six_thermodynamic_states_of_the_same_monatomic_ideal_gas_sample_are_represented_in_the_figure.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00874a5bc066edfa0f7a0/t/5fc54a54f3de5e49b51394a3/1606765140797/sign_of_the_beaver_characters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cf839b7-4662-4c9c-81f9-89f478507da3/define_socratic_irony.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/arrest_report_leon_county.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dff8f6cc-37c1-42ae-884a-c86d5c474962/jakusofokuxarobomud.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6c096c89b935f15dd7edf/t/5fcb8708b6b7366152fa312b/1607173898054/vofapotibipax.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13e7dd49dd12447366960/t/5fceb6827bca2b4c4f3021d9/1607382659046/ninepakenabulepalabenatax.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_off0000dab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB7 5460 bytes
SHA-256: d76c06d974c72174557314afab5683fbaae4d717e3a46f362033cf1cb74bc5ed
font_01_sfnt_off0000ed42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED42 10772 bytes
SHA-256: 855d33571b57bebd1af3f96ce28a5e84741b5f5e988ebb8d2806bb93e6983101

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