Malicious PDF — malware analysis report

Static analysis result for SHA-256 032954acf7f3892d…

MALICIOUS

PDF

77.0 KB Created: 2021-01-25 20:59:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 5b4673648691888f9e8b668769c83680 SHA-1: 75715d473f11e4296431f26f1e4b6598c40be501 SHA-256: 032954acf7f3892d35a871a4c42ca8c92a7485635fc7e464fc0c6cf566ce83c2
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a URL pointing to a potentially malicious domain. ClamAV and ML classifiers have flagged this file as malicious, indicating a phishing or trojan-like behavior. The document body, though heavily obfuscated, suggests a guide, which is a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/aws?utm_term=freestyle+street+basketball+2+pf+guide PDF link annotation
    • http://difodalutovirub.iblogger.org/electrode_pad_placement_guide.pdfIn PDF document text
    • https://kevanosum.weebly.com/uploads/1/3/0/9/130968994/jewopukiza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418175/normal_5ff5ecd9b0bad.pdfIn PDF document text
    • https://kopezufotixese.weebly.com/uploads/1/3/1/1/131164020/9859689.pdfIn PDF document text
    • https://larigagip.weebly.com/uploads/1/3/4/8/134887586/xanufipeje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390663/normal_5fe9b7667a3a4.pdfIn PDF document text
    • https://tujezagen.weebly.com/uploads/1/3/4/7/134775207/dubawag.pdfIn PDF document text
    • https://ruweveti.weebly.com/uploads/1/3/1/3/131379789/8acfacf412432e1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bibuligo.epizy.com/cardboard_sheets_bunnings.pdfIn PDF document text
    • http://duzewinabo.epizy.com/3rd_grade_language_arts_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/la_chute_du_prsident_vf.pdfIn PDF document text
    • http://zebigibozudival.epizy.com/tesav.pdfIn PDF document text
    • http://semazixiguf.rf.gd/kudinaxofibi.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/67133029590.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/morupomurutubibubuzulaler.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/right_triangle_trig_word_problems_answer_key.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_off0000eebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBC 5604 bytes
SHA-256: a0be639e676520b1a1a8bd6e14b82eafc43e86e31d5edac78730cb8ce5bcae73
font_01_sfnt_off000101e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E5 10908 bytes
SHA-256: af60e3dc5a35fea3003875bd0369d868f9b10b4bb527aed033c468ccd01b7b28

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