Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2dd97477cb94ad4…

MALICIOUS

PDF

94.4 KB Created: 2021-02-25 12:49:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3edf3ef6814a6efd438419664287493c SHA-1: 5c4d9394584b37c98b8847a9518759161cbfff3d SHA-256: d2dd97477cb94ad426331fd74e9232b1b80e1a7b7f30449c1b21973ce49b2fb6
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though partially corrupted, contains text related to aerial photography and mentions wkhtmltopdf, suggesting it might be a lure for a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=que+es+fotograf%25C3%25ADa+aerea PDF link annotation
    • http://bandalet.club/portfolio_design_template_htmlequnk.pdfIn PDF document text
    • http://daddytestit.xyz/93548529855okq9u.pdfIn PDF document text
    • http://lazimixaze.iblogger.org/how_to_circulate_heat_from_pellet_stove.pdfIn PDF document text
    • http://tdsevsvet.ru/does_subway_nutrition_include_breadb5fvt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419633/normal_601b67a4f3a28.pdfIn PDF document text
    • http://ipatovaalena.ru/p5_max_all_confidants_guidemu3f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465133/normal_602924923fbfb.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/tetenifeme/don_shirley_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/collector_guideline_rate_raipur_2019-_20.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/remove_animation_listener_android.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/ginelojunuruwilig.pdfIn PDF document text
    • http://xebowuruno.epizy.com/xukowaxejamamug.pdfIn PDF document text
    • http://pagosunizuboroz.epizy.com/chess_tactics_books.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/74855165483.pdfIn PDF document text
    • http://xarugutivi.epizy.com/15563909099.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_off000124ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124EE 4744 bytes
SHA-256: 4b9a857c1cd7993942127080cf37cea4ff95302900d4492cae193d8aaf4614de
font_01_sfnt_off00013532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13532 12068 bytes
SHA-256: f960e32f3b398aa4a67807dcdb819d0a4c223963628da3195beba9e749e15ff1
font_02_sfnt_off00015c73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C73 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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