Malicious PDF — malware analysis report

Static analysis result for SHA-256 9546ba745e9f5279…

MALICIOUS

PDF

78.0 KB Created: 2021-03-14 21:20:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae10b1a505b9f358a456640599d10874 SHA-1: e64c099a9d9473f29137615531059261ec465f3e SHA-256: 9546ba745e9f52791d93cfacfbbf62ccf77ccdd03ede3e4215f55953440cb165
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, indicating a phishing or trojan payload. The embedded URL points to a suspicious domain, likely intended to trick the user into downloading further malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to deliver a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://lozipotod.ru/award?keyword=ficha+bibliografica+ejemplo+pdf
    • http://hotgirls.host/dd_phb_feats6ugo6.pdf
    • http://pearhaidhr.fun/54924546886msirw.pdf
    • http://thefortykuti.com/8150482817551b3z.pdf
    • http://beautysss.site/falabajijetuwujuxatijegoaax0.pdf
    • http://unityfree.xyz/rasomufur3jjyc.pdf
    • http://pofitasexa.iblogger.org/ubd_design_template_blank.pdf
    • http://confirmyourverifiedbadge.com/steigerung_adjektive_franzsisch_bungenyy8ro.pdf
    • http://wordwild-store.com/20266429712ise4w.pdf
    • http://zejenaxudemato.22web.org/cronica_de_una_muerte_anunciada_analisis_por_capitulos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://8eeb1f0a-0cdd-4c66-98a4-83777b49fb54.filesusr.com/ugd/64f9d2_e7d6742e2c7940cf956169c7f2b7e641.pdf?index=true
    • http://kitomov.epizy.com/62188615060.pdf
    • http://gezojetisab.epizy.com/wosarapaperufaragirogot.pdf
    • https://1801fa0f-56e4-4894-8452-b8e06651d4be.filesusr.com/ugd/868401_2bf1cc0da1dc40deab9e191ea3b16dff.pdf?index=true
    • https://s3.amazonaws.com/wujodibu/36866871420.pdf
    • https://167c8e7b-8160-49a2-a88e-f26749d647c8.filesusr.com/ugd/1ad47d_444f0525a1c44499ad7e501ac97eae04.pdf?index=true
    • https://36c7e617-1221-4173-b726-d5bce2878801.filesusr.com/ugd/610d21_80dee6dc0c344883ad548647be4e02c4.pdf?index=true
    • http://dipumekamerara.rf.gd/73218442797.pdf
    • https://b8e64ff8-a522-4625-8e91-70fe47930cb2.filesusr.com/ugd/37987b_edc237eb64b14b9db6b1d687b4227a8f.pdf?index=true
    • https://s3.amazonaws.com/rirusozo/guided_imagery_relaxation_technique.pdf
    • http://nidawijonag.rf.gd/24797805335.pdf
    • https://s3.amazonaws.com/zoxewudunigus/26207465595.pdf
    • http://tatikijoduvej.epizy.com/69950810248.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_off0000edb9.bin
519aeb5f938e10ca8330fcf5fe6e6fb8a603d9c3d22d124312d38a86899cb667		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB9 5564 bytes
font_01_sfnt_off0001007d.bin
a8b55d3cd13dd7be779bc926a019297b32d445438da2392376bc10f5cde8521c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1007D 12756 bytes

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