Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd445318db3e99a4…

MALICIOUS

PDF

218.5 KB Created: 2021-03-19 22:14:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 13db800f9f88a7a1327d8fc74d3d625e SHA-1: 2ea424f573c05c433bea37b535fedd084f6a12e6 SHA-256: cd445318db3e99a4a32ef3ba6872c9ce0a927e1d7c8e642e735e6fe2978ccc6f
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and document body content suggest a phishing lure for pirated content. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic point towards a malicious document designed to redirect users to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9661

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://xezojetit.ru/wix?keyword=skam+english+subtitles+season+1+download PDF link annotation
    • http://xefawojuj.mygamesonline.org/jointly_distributed_random_variables.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453908/normal_602ef0c184a55.pdfIn PDF document text
    • http://brumbum2.xyz/red_and_blue_balloons_decorationhgm73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486758/normal_6030edd8a7cb1.pdfIn PDF document text
    • https://cdn.sqhk.co/leluforeref/jcL8gh4/7752788082.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/U5ggBhe/rolatig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453579/normal_5fc62f9a730ce.pdfIn PDF document text
    • https://cdn.sqhk.co/rijelonijas/MLhbii8/anthill_farms_peters_vineyard_syrah_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/gghoheG/sawojenomilifidedi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464850/normal_601aaf2be2b7f.pdfIn PDF document text
    • http://cheeronthemove.store/autocad_architecture_2018_manualwhs5n.pdfIn PDF document text
    • http://tonukavugu.mygamesonline.org/what_lives_in_the_forest.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/passione_canzone_napoletana.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409799/normal_600af1c7beacd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.orgThisIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/79837114578.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/perforated_steel_sheet_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/cloridrato_de_metformina_850_mg_preo.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/20096455808.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/9334726750.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/newajojaluxuvuneb.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/nowapumusuwuximofexuko.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/drift_away_steven_universe_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/lagu_tik_tok_aye_123.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/ziguniweboparozexawifizef.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
    • http://scripts.sil.org/In PDF document text
    • http://scripts.sil.org/OFLAbyssinicaIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002586b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2586B 45008 bytes
SHA-256: ec435eaf0cb3adc83fdb0ba5961d6aeefaa72d63e15764e258878fe4936eb630
font_01_sfnt_off0002dc1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC1E 5592 bytes
SHA-256: 175f94eaacee19e649a2294dfb35cfd5d7360a43cdb32236f8074fc1079bd365
font_02_sfnt_off0002ef13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF13 21012 bytes
SHA-256: 3d50f8022a4cf2643d0b72052cd47b8065fd5c2e1670feceb0d114db9cb18c89
font_03_sfnt_off00030f69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F69 29976 bytes
SHA-256: b1a2f80601f8e803e85b56f2c49c256e9899736101d5d74f1dce024911bdd42f

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