Malicious PDF — malware analysis report

Static analysis result for SHA-256 e85120e77194e30a…

MALICIOUS

PDF

96.7 KB Created: 2021-03-22 04:11:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03aa0c14439ab15151acd1aa1b733572 SHA-1: 72f3cc2156cf35b3a3f87da2594c9340a12e46d9 SHA-256: e85120e77194e30a92efe2a21c9e74ca77d5dfbdd20e25a8a976bd34b4eb57d2
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, pelibifir.ru, which is likely used to host a malicious payload or phishing content. The document body, though heavily obfuscated, suggests a theme of crafts and recycling, which is a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/award?keyword=manualidades+con+material+reciclado+para+adolescentes+pdf
    • http://idealicacolumbia.site/butisica7zm.pdf
    • http://nakotigolajeg.scienceontheweb.net/zamimulusizotobupo.pdf
    • http://sokixatov.mywebcommunity.org/kifojudosigokirezulusolo.pdf
    • http://sudilufib.getenjoyment.net/jipuluk.pdf
    • http://vijevejumozugim.sportsontheweb.net/44520579399.pdf
    • http://chambrehq.xyz/tuken2xjq1.pdf
    • http://budofibo.mygamesonline.org/bvg_karte.pdf
    • http://newberginvestmentproperty.com/shareholder_loan_agreement_template_canada2mbh2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/waxegatulo/un_mundo_feliz_pelicula_1998_online.pdf
    • https://s3.amazonaws.com/womirofop/bummi_lied_text.pdf
    • https://s3.amazonaws.com/wefadep/holly_leaf_outline_template.pdf
    • https://uploads.strikinglycdn.com/files/3cc9046d-b949-4b67-856e-05556109c9f6/pokapedatir.pdf
    • https://s3.amazonaws.com/varolexexus/81769718850.pdf
    • https://s3.amazonaws.com/bogeguva/vekevojazu.pdf
    • https://s3.amazonaws.com/zetubakuz/66309599996.pdf
    • https://s3.amazonaws.com/zaxefemebidaz/mobatogapapami.pdf
    • https://s3.amazonaws.com/jebokizez/7023453558.pdf
    • https://s3.amazonaws.com/bezegoluzose/75688371581.pdf
    • https://uploads.strikinglycdn.com/files/f50630a9-6f0a-41ac-95f5-1964d404545c/is_a_sensory_processing_disorder_considered_a_disability.pdf
    • https://s3.amazonaws.com/pasawexawinogad/crm_app_for_android.pdf
    • https://s3.amazonaws.com/lolaritemukole/tojutalemezomebe.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_off00013c00.bin
38dc48f397fe2b1f0d1e5bd3627e30ab06af9fe4d52b7e1415d5515a837cdfe0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C00 5304 bytes
font_01_sfnt_off00014dfe.bin
d0e17bae0289e7d01dc99f60db3b8c05cdaa5c5841845f520aff9c8da8197fd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14DFE 11340 bytes

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