Malicious PDF — malware analysis report

Static analysis result for SHA-256 2125ab915ced7b23…

MALICIOUS

PDF

68.5 KB Created: 2021-02-03 02:04:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9fbb93a7720e43bf9861b52a881b6e2e SHA-1: c5c155bc7a2a7943fcf023a611f1fa4172e92144 SHA-256: 2125ab915ced7b236c40859ec43822ab2c4c01594cbffe4af20ca16a1b95d425
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'druttle.ru' suggests a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document, likely delivered via spearphishing.

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://druttle.ru/aws?utm_term=eliciting+sounds+book+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495686/normal_5ff16a2055d9b.pdfIn PDF document text
    • https://cdn.sqhk.co/lokiwejawe/VhbAhgC/let_s_talk_about_race_pictures.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467285/normal_5fe2152101a83.pdfIn PDF document text
    • http://buzatukati.iblogger.org/63109480666.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/7lgirge/the_walking_dead_michonne_trophy_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386335/normal_5ff3f20d588b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459921/normal_5fe76bd200a7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444369/normal_60197457cbcdc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486034/normal_5fee1fb41f4f6.pdfIn PDF document text
    • https://cdn.sqhk.co/xufojidaju/gigIqFL/donulenovapoliluguserave.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nabunuwo.epizy.com/first_birthday_invitation_templates_online.pdfIn PDF document text
    • http://mexexumekevuk.rf.gd/ca_cpt_full_form.pdfIn PDF document text
    • http://tivapatovike.epizy.com/ijazat_movie_utorrent.pdfIn PDF document text
    • http://pusaxedufa.rf.gd/70493386320.pdfIn PDF document text
    • http://jogisav.epizy.com/nabuwinodireteneb.pdfIn PDF document text
    • http://tujukiji.rf.gd/bitten_imdb_parents_guide.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_off0000d038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD038 5176 bytes
SHA-256: 29024b5f6ad3a4d1366e0f66f7ebd2eabdcc281d0d516f7397b2c80a17a4e1f6
font_01_sfnt_off0000e1f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F1 10304 bytes
SHA-256: 7dcdbc7a7135356a6b5c73ba0cf7ed736006f62111e231c8ff8bd785e7e48c3f

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