Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fdcb05002ca3d4d…

MALICIOUS

PDF

74.3 KB Created: 2021-02-15 09:48:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: b79fe01cab8a09576f159bf8e5e82462 SHA-1: 37486998acc3276cf0c203d7b049b3a09a15e9cf SHA-256: 3fdcb05002ca3d4da4fb2d85f5c7482f58996d2cdb5f243e7660677e953798c5
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lead users to phishing or malware download sites. The embedded text 'Remember the milk pro crack' suggests a lure to entice users to click the malicious link. While no scripts were explicitly extracted, the PDF structure and the presence of malicious links indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/strik?utm_term=remember+the+milk+pro+crack In PDF document text
    • http://netzamka.ru/logos_quiz_level_3_answers_iphonefixtk.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/Lkgcfhb/mamonajupevove.pdfIn PDF document text
    • http://govnosiakxws.online/93782272839rqzf6.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzomorikat/ggziaji/kenyan_virtual_dj_sound_effects_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416143/normal_6027d6abbeec4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450439/normal_5fea1b3f5e026.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496571/normal_5fe4a2708f310.pdfIn PDF document text
    • http://todayshop.website/56834149231yj5sy.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/hcgdgcB/english_20-_1_reading_comprehension_practice_test.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/hfdSjwN/parachute_vs_brooklinen_robe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386828/normal_6014f5cc8c077.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/ronatiduzoxij/english_speaking_lessons_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/19038253116.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/new_assamese_movie_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/luwafojipus.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/battlefield_firestorm_game_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/daily_action_planner_template.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_off0000dfc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC1 5204 bytes
SHA-256: b2f4bcd999a9e20e2f1922bcda4fc5ace7035e298e6c7d461d090a721ebcc7f5
font_01_sfnt_off0000f146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF146 12660 bytes
SHA-256: e30c315c8ef618aef2d2169b0a62a1f2022b94f543b90cfc885d18349a92d533

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