Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d4271509d2b100…

MALICIOUS

PDF

76.3 KB Created: 2021-02-19 07:12:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d9a1dd7bd2629032918516024814567e SHA-1: 99323057e7e7beff2160e3ad03d975ed8fcfdb9f SHA-256: c3d4271509d2b10089fcc29ee159f23180f68777afcc806d9205b1bb0d5974b4
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI that points to a suspicious domain, likely intended to redirect the user to a malicious website. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan delivery mechanism. The document body, though partially corrupted, suggests a lure related to printer troubleshooting, a common tactic for phishing or malware distribution.

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=my+hp+photosmart+d110+won%2527t+print+wirelessly PDF link annotation
    • http://wexuxeretul.22web.org/boom_shankar_full_song.pdfIn PDF document text
    • http://boost-store.net/kushi_movie_songs_ringtones_telugu5w7sv.pdfIn PDF document text
    • http://umniashka.ru/176579618278aidp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365576/normal_600cc6d22f776.pdfIn PDF document text
    • http://sipamuxagiporen.iblogger.org/cafeland_apk_para_hilesi.pdfIn PDF document text
    • http://zelifonobop.22web.org/17287462745.pdfIn PDF document text
    • http://jakartapro.xyz/uyire_songs_free_mp3_downloadlncpg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494891/normal_5ff1e9c17db60.pdfIn PDF document text
    • http://megantv.site/craft_cms_search_form7r0kt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490252/normal_600e412b1cbf9.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/lunojol/careless_whisper_guitar_chords.pdfIn PDF document text
    • http://bezopiwuzalobit.rf.gd/graphic_designer_salary_per_hour_in_california.pdfIn PDF document text
    • http://sipisadam.rf.gd/kotopujudagaxi.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/33619651250.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/48300944394.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/70502659488.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/94143938652.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/63957547275.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/boom_beach_mod_apk_data_unlimited.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/practical_english_grammar_exercises_1.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_off0000ec7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7A 5624 bytes
SHA-256: f698546a2279f691fac0d97051ab5207e39807522ec8e6bb9bf2071aca4e1c47
font_01_sfnt_off0000ff97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF97 10556 bytes
SHA-256: c8fba949964cc1e0fa8dfae3d6164ccdf03846688c45a0ae440fd1b9e762f52d

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