Malicious PDF — malware analysis report

Static analysis result for SHA-256 d207ec3b8f2c32f3…

MALICIOUS

PDF

70.5 KB Created: 2021-02-23 09:37:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e3deaf9eb08a00598c95956a42a9ef17 SHA-1: 9f1770e58696b42014d26224d7308f7dbee2738c SHA-256: d207ec3b8f2c32f3e442500de06183bc51383a488312f88cb2415710007ebb33
96 Risk Score

Malware Insights

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

The file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'jottigo.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF format and the nature of the heuristics suggest it may contain embedded JavaScript or exploit code to redirect the user to malicious sites.

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://jottigo.ru/strik?utm_term=endgame+beckett+shmoop PDF link annotation
    • http://fewizoge.22web.org/3178361397.pdfIn PDF document text
    • http://kodesurajevo.iblogger.org/a_wrinkle_in_time_guided_reading_level.pdfIn PDF document text
    • https://cdn.sqhk.co/nixafusoda/bFDjbIL/download_car_simulator_japan_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xolanikipiz/ihSidgj/92429083974.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415756/normal_6020a8863fdf9.pdfIn PDF document text
    • http://vabakavolageni.22web.org/95002908660.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_600d098d33299.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420454/normal_601e24dbb138b.pdfIn PDF document text
    • http://topdouche.xyz/magovikidedovrwm4.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/bid5Wji/my_talking_angela_apk_mod_mega.pdfIn PDF document text
    • http://tubudemawaxoki.iblogger.org/valaso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404528/normal_5ff94f8f856ea.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vovuzize/narurisufu.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/katun_song_status.pdfIn PDF document text
    • http://wabeworozad.rf.gd/51118047620.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/73713134123.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/chikku_kuriakose_audio_song.pdfIn PDF document text
    • http://duguteterexu.epizy.com/faxivomexuvemofulipe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB98 5260 bytes
SHA-256: 064c99543fce0f698e826eaf295d10018645f84b04cc5731390e2cbdefd59e76
font_01_sfnt_off0000dd44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD44 9864 bytes
SHA-256: 289c02475bd10341114d54703adcc61288090b23abdaec9bc313750f52599cb7
font_02_sfnt_off0000feba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEBA 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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