Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae863dcd10d7c9dc…

MALICIOUS

PDF

73.6 KB Created: 2021-03-02 13:40:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32988e2e22626c59e0c929dcdcaa155f SHA-1: def84b95e2c0655bfd5e59bdf274e9bf0ffed56b SHA-256: ae863dcd10d7c9dc4307689a4b5bf1b51b8a4bdbcd9a2b4a26149e0a2d546246
96 Risk Score

Malware Insights

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

The file was detected as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URIs pointing to external resources, likely for phishing or malware distribution. The presence of PDF-specific heuristics and the embedded URLs suggest an attempt to exploit users through a malicious document, likely delivered as a spearphishing attachment.

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://vilenefex.ru/wix?keyword=escape+series+3
    • http://simultaneously.space/zupumunafiwye5r.pdf
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/mewefam_lejuxara.pdf
    • https://tebozelekunoton.weebly.com/uploads/1/3/1/4/131453588/584897.pdf
    • http://duwelizub.mywebcommunity.org/65223641361.pdf
    • http://navevukosuso.mypressonline.com/mujer_negra_nancy_morejon_english_translation.pdf
    • https://wotujajatedigi.weebly.com/uploads/1/3/5/2/135295120/f78592.pdf
    • http://itdomen.fun/tazijipuruludinufolawoo4lqb.pdf
    • http://tezibif.mygamesonline.org/lopelubuwixigudizuj.pdf
    • http://tugrull.com/89511630261n5imv.pdf
    • https://ratopavitakam.weebly.com/uploads/1/3/4/4/134460251/nubesakivoped.pdf
    • http://bidizujimon.getenjoyment.net/52644548356.pdf
    • https://poroxokinawutaj.weebly.com/uploads/1/3/4/5/134507376/volomamanevizut.pdf
    • http://ca-management.website/c5_envelope_die_cut_templateacywy.pdf
    • http://prizinsta24.space/manga_like_re_monstervedl0.pdf
    • http://reflectionss.space/iso_9001_certification_course_in_indiamhf3t.pdf
    • http://se-mrush.com/keeper_password_manager_free_trialueh9b.pdf
    • http://googsnat.space/rufujuri7ympf.pdf
    • http://50offstore.info/busexelasinafexiwigenu0e93u.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kitakilesa/27875002944.pdf
    • https://s3.amazonaws.com/wavunot/fractions_and_percentages_of_amounts_worksheet_tes.pdf
    • https://s3.amazonaws.com/wazotojemov/incident_investigation_report_template_south_africa.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3fe.bin
2f0b8eb9231598fe0f06c95ad54be49897cdca2ec5ce9c2ad42b0809c316b194		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FE 5016 bytes
font_01_sfnt_off0000f524.bin
bc3360bb953361097a6c38fc3e797f94eb2e8b345abc65cfa07fb0fd03ddf058		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF524 10596 bytes

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