Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fee1d95a5619700…

MALICIOUS

PDF

72.6 KB Created: 2021-01-23 18:25:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 64054df2e5a981a26be326897aa6e087 SHA-1: 7cae794ea7fdce8441f285b9a013abc013b662f3 SHA-256: 7fee1d95a56197006de253141d9e26cb84157fd9650c1e205b09722a5cb5e509
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a 'stoichiometry worksheet'. No scripts were extracted, but the presence of an external URI and the nature of the detection indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffe.ru/123?utm_term=mole-mole+stoichiometry+worksheet PDF link annotation
    • http://lesanuzununefa.22web.org/74609309788.pdfIn PDF document text
    • https://site-1166042.mozfiles.com/files/1166042/tanix_tx9_pro_user_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485929/normal_5ff1cbb22d4d2.pdfIn PDF document text
    • https://site-1194115.mozfiles.com/files/1194115/miracle_crack_tool_2__54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370528/normal_5fce551b34a19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482625/normal_5fcff617d2582.pdfIn PDF document text
    • http://zavutuwifuwe.iblogger.org/texas_chainsaw_massacre_full_movie_mp4.pdfIn PDF document text
    • https://site-1188839.mozfiles.com/files/1188839/any_mobile_number_call_details_online_without_otp.pdfIn PDF document text
    • https://site-1177387.mozfiles.com/files/1177387/lawudivo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gokujipavelidaz.rf.gd/50313060432.pdfIn PDF document text
    • http://taperimogitunal.epizy.com/chemdraw_ultra_crack_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/48887256375.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/fatigue_crossword_answer.pdfIn PDF document text
    • http://lobidirubegevil.epizy.com/calum_scott_album_zip.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/44953558467.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/dasenaduruzil.pdfIn PDF document text
    • http://fabonek.rf.gd/dubemela.pdfIn PDF document text
    • http://tuvugerij.rf.gd/15038070039.pdfIn PDF document text
    • http://xifabemifuxiza.rf.gd/standard_expanded_form_worksheets_3rd_grade.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_off0000de6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6E 5124 bytes
SHA-256: 76d57d21b4917db53c9bb13d6af01b979b503af5f30b4a6b02995bfcbea96e60
font_01_sfnt_off0000efdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDD 10988 bytes
SHA-256: 9d93b99a87cfebc3839c89e41260f38f295ebf1ed921ecdc8dc102901d5dd173

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