Malicious PDF — malware analysis report

Static analysis result for SHA-256 d400486dd1b732f2…

MALICIOUS

PDF

77.4 KB Created: 2021-03-28 06:16:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: d685f7bcd7502ca28a1582a60018ca3f SHA-1: c1292378a4497b72036ccdeb3b46574c7a308b86 SHA-256: d400486dd1b732f2cf4d982dbc10392f97007bd855725068c3a1dd41c09b4b0a
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL disguised as a search result for song lyrics. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of the malicious URL and the document's deceptive content are key indicators.

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://botokaw.ru/award?keyword=i+raise+a+hallelujah+lyrics+and+chords+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447640/normal_5fe58b912e357.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422877/normal_60484da3340ab.pdfIn PDF document text
    • https://xivunububan.weebly.com/uploads/1/3/0/9/130969166/figafowukudezuzovu.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/eiaZCAi/bizumijiwimofe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389816/normal_5fe87cb355e37.pdfIn PDF document text
    • https://vivuwugo.weebly.com/uploads/1/3/0/9/130968913/7a704c43ca8.pdfIn PDF document text
    • https://gutakabumediru.weebly.com/uploads/1/3/4/4/134492877/jipivibexeti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426407/normal_602ebc5c10a9b.pdfIn PDF document text
    • https://cdn.sqhk.co/tamupoto/itggigj/mikogugobopuve.pdfIn PDF document text
    • https://cdn.sqhk.co/rifarako/jftojfk/pumilutovikiguf.pdfIn PDF document text
    • https://nesiritu.weebly.com/uploads/1/3/4/6/134612540/28d06f.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/527f2440.pdfIn PDF document text
    • https://cdn.sqhk.co/dediwifime/ih0Dvjc/90225021311.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/mixanaz/rifebakonazipalobed.pdfIn PDF document text
    • http://watenumedar.rf.gd/83635542324.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/28621780454.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/scrivener_templates_dissertation.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/brewmaster_modern_font.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/matibinujosi.pdfIn PDF document text
    • http://zelogano.epizy.com/85891794036.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/what_is_the_bright_twinkling_star_tonight.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/nato_phonetic_alphabet.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_off0000f18c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18C 5356 bytes
SHA-256: 962fb4a9a73f0a937485cea263fb73f6834a5a23f3bbcf61d4bfe8e2fbff0ba9
font_01_sfnt_off000103cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103CC 10656 bytes
SHA-256: cc2e5adde9956a765631724c70d79360107923d46ec87997a478a1a42535dbf9

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