Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeee855287c49026…

MALICIOUS

PDF

73.8 KB Created: 2021-02-12 10:38:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a82fd28f4886ad31b96f20ace28b1af0 SHA-1: 1e93fb800e4fb4279d7110bb9e861520e1679140 SHA-256: aeee855287c490263b4e94c8ffad4d3398359f1637f30c371a5ff62b8962d0b6
96 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a URL that mimics a search result, likely intended to trick the user into clicking it. No scripts were extracted, but the PDF structure and embedded URI suggest a phishing or credential harvesting attempt.

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/wb?keyword=busby%20west%20public%20school%20uniform PDF link annotation
    • http://gofimowekes.66ghz.com/37686546267.pdfIn PDF document text
    • http://hr-insider.com/summertime_saga_download_pc_new_versionzsu8h.pdfIn PDF document text
    • http://yesitalia.fun/fawetetwr9g5.pdfIn PDF document text
    • http://zodusen.22web.org/gibarowilejugek.pdfIn PDF document text
    • http://foxiwirilavisan.22web.org/megozajukabesunuxedojo.pdfIn PDF document text
    • http://lnstgramhelpcopyright.com/88755505296urk3t.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/test_de_dones_espiritualesqhdx6.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/ropidadegaxut/vomoz.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/byod_policy_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/error_2004_s_brom__da_fail_ufi.pdfIn PDF document text
    • http://muxajetolalet.epizy.com/16937301409.pdfIn PDF document text
    • http://sukidagijonola.rf.gd/81297976435.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/addendum_form_for_lease_agreement.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/akshara_singh_songs_free.pdfIn PDF document text
    • http://kisezemewarajox.rf.gd/gatazifafijazimubuwe.pdfIn PDF document text
    • http://walerofudovewir.rf.gd/bareilly_ki_barfi_subtitles_english.pdfIn PDF document text
    • http://vujomafo.epizy.com/cinema_box_android_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/aiden_english_theme.pdfIn PDF document text
    • http://zagebixomibolo.rf.gd/wajimu.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_off0000e100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE100 5428 bytes
SHA-256: 983875c0752c8176a0c2f15a6fbfb3f28550bf6a87a9a283aafd4700582611c3
font_01_sfnt_off0000f368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF368 11320 bytes
SHA-256: 61d98ebbdaa2c6e03b8559a31ee6d68ec9dfe5fb23f85307820f9f9f59cead89

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