Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fae9951e62ef23c…

MALICIOUS

PDF

74.5 KB Created: 2021-01-24 12:52:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 03d8ad366491498238e4c1f2aad9834b SHA-1: ed2cb23c4994e4f833351e3a61f84c6c8f67ae90 SHA-256: 2fae9951e62ef23c3ea369ca9769bdec193d228b48c9d0417824fd7b541f660a
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating phishing and trojan characteristics. An external URI points to a suspicious domain, likely intended to host malicious content or phishing pages. While no scripts were explicitly extracted, the PDF structure and the presence of embedded URIs suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further malware deployment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=strike%20or%20hit%20very%20hard%20crossword%20clue PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379230/normal_5fe233bde0653.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469104/normal_6005fba569f3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374704/normal_5fdb0720e10e8.pdfIn PDF document text
    • https://cdn.sqhk.co/vimexuda/giahcjd/alone_pic_girl_dp_hd.pdfIn PDF document text
    • http://zexawil.22web.org/41384815035.pdfIn PDF document text
    • http://sapazukuwujoji.22web.org/all_backup_restore_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404292/normal_5fec9377354f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401555/normal_5fc6c9e289c4c.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/jimugivos/interview_questions_for_nurses.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/exponential_models_worksheet.pdfIn PDF document text
    • http://sajipesexadagon.epizy.com/13203079353.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/edexcel_a_level_maths_book_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/vepuxixadidufujugomoxeb.pdfIn PDF document text
    • http://bekovomojuto.epizy.com/vokupubotivezaduvo.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/77458021875.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/kavitere.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/finite_and_nonfinite_verbs_worksheets_grade_6.pdfIn PDF document text
    • http://xediguvodolej.epizy.com/70429876733.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/cpld_architecture.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/canvas_template_powerpoint.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_off0000e661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE661 5448 bytes
SHA-256: 94840c988f947cbd821e7615d152dc3822a6f842920bec176a568bc2679f3875
font_01_sfnt_off0000f8fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FE 10408 bytes
SHA-256: 89c997d7741be985b57be6ddd63e119217a2406dd6a48a70ab0d10a216c7c42e

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