Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f2173c4dffb041…

MALICIOUS

PDF

71.3 KB Created: 2021-02-16 04:36:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f337d437262ccd510e79f7d260938b23 SHA-1: 20aa565ae645c0717cbe89b84915046a0130a06f SHA-256: 07f2173c4dffb0417550effc91766a88c77418a83e6fd73842ce2d30a34fe427
116 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. It uses a QR-code lure. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://crophysi.ru/wix?keyword=free+download+whatsapp+apk+for+pc PDF link annotation
    • http://viewcreditscore.info/41262029643mm9vn.pdfIn PDF document text
    • http://baranaydin.org/wadoroxenutevoxosaqflaa.pdfIn PDF document text
    • http://xigosilefonaboj.iblogger.org/bodo_video_sajan_sajan.pdfIn PDF document text
    • http://digitalcalakk1.xyz/62672319463pzj3l.pdfIn PDF document text
    • http://helpcontactform.com/90930843431tyip1.pdfIn PDF document text
    • http://memijijarem.22web.org/south_movie_3gpp.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/damerirazib/adj_nucleus_pro_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/tenancy_bond_transfer_form_nz.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/45938234979.pdfIn PDF document text
    • http://dinixebun.epizy.com/pusomizilefezano.pdfIn PDF document text
    • http://vosowetawevu.epizy.com/59125645659.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/baximetemukines.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/oecd_beps_report_action_2.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/90486887340.pdfIn PDF document text
    • http://zabukek.rf.gd/algebraic_fractions_worksheets_tes.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/fazesetamebatajijaposenok.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_off0000d8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F9 5352 bytes
SHA-256: 578e888e8ed596bd730cbf753bb97f2d61c2bd96f1a5f99f1c438fe55d0fefce
font_01_sfnt_off0000eb40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB40 11404 bytes
SHA-256: 0eefcb1320389429f3df8fa98409453fd4702098520e8b95f1ecf5932d5d28a1