Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9745faf6aada005…

MALICIOUS

PDF

67.3 KB Created: 2021-03-29 18:12:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 032cd03ba2a440379fc9618c4e1844bf SHA-1: 9dbe5738f9a196f4d58481ddb5d5407f524990d5 SHA-256: f9745faf6aada0052ce18175aa4a674871b8d40fdca392314e8b104838807b15
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many pointing to potentially malicious domains, suggesting a link farm or distribution point for malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to song lyrics, which is a common tactic to disguise malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/wix?keyword=blood+on+the+risers+lyrics+youtube PDF link annotation
    • https://cdn.sqhk.co/medujebukoma/TnhfIKC/amazed_by_you_tim_mcgraw_lyrics.pdfIn PDF document text
    • https://wobelafesuta.weebly.com/uploads/1/3/4/7/134767333/7040963.pdfIn PDF document text
    • http://pekuxareja.22web.org/81433273699.pdfIn PDF document text
    • https://cdn.sqhk.co/luketopaja/1gghfii/student_financial_aid_letter_template.pdfIn PDF document text
    • https://gupapuna.weebly.com/uploads/1/3/4/7/134726568/kinutitunexozom-vijovifo-jogaposadime.pdfIn PDF document text
    • http://swiss-gear.store/binary_options_trading_tutorialzile2.pdfIn PDF document text
    • https://bopugokux.weebly.com/uploads/1/3/4/9/134901566/cbfac.pdfIn PDF document text
    • http://tebogekememesij.mygamesonline.org/verbe_etre_et_avoir_en_anglais_a_imprimer.pdfIn PDF document text
    • https://cdn.sqhk.co/jawuraxexije/jbZigjd/risk_management_synonym_list.pdfIn PDF document text
    • https://gozerezujokosas.weebly.com/uploads/1/3/4/8/134856803/kefox.pdfIn PDF document text
    • http://mnogolidov.xyz/super_smash_bros_ultimate_enhanceable_spiritscd0b3.pdfIn PDF document text
    • http://pe50off.pro/inkscape_0.92.4_appimage1filo.pdfIn PDF document text
    • https://radamokugek.weebly.com/uploads/1/3/2/6/132696621/tolot_wesuxuvabe_jixubi_wexetokaze.pdfIn PDF document text
    • http://docita.fun/19844968532y6bw2.pdfIn PDF document text
    • http://dofujifeluradep.medianewsonline.com/92160575464.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/risalenefazozo/functional_and_nonfunctional_requirements_template.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/eastern_washington_state_map_with_cities.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/sap_crystal_report_13._0._22.pdfIn PDF document text
    • http://nisetekotixob.myartsonline.com/danotuwaneparodizifigufez.pdfIn PDF document text
    • http://puwagof.rf.gd/materi_akuntansi_keuangan_lanjutan_2.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/convert_cdr_to_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/vitejiralugavuritoj.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_off0000cbe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE1 5108 bytes
SHA-256: 63243d3ea76f540afdf0d0b1170218c142d5b1d9c7c8c5f69b60786d5f181640
font_01_sfnt_off0000dd42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD42 10080 bytes
SHA-256: 38b378b9cc0185e89b2913eb972c18101ef1e6c77b6912b47246853fcaa41b90

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