Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bca3a620fbf08a9…

MALICIOUS

PDF

75.0 KB Created: 2021-06-10 01:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63b838331a8102eeba3414bf2a230fa4 SHA-1: 69c40a23375cd2d775475ae25cfc985bbccb62e9 SHA-256: 7bca3a620fbf08a91431ce3e6cdd7c9b31de43d4c3c9ed04a40057974af70139
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were extracted, the presence of the external URI suggests the document's primary purpose is to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://garglob.ru/pbw?utm_term=animal+kingdom+chart+pdf
    • https://cdn-cms.f-static.net/uploads/4365549/normal_602acdd6ace6f.pdf
    • https://static.s123-cdn-static.com/uploads/4490539/normal_5fe2533ba5f52.pdf
    • https://static.s123-cdn-static.com/uploads/4447108/normal_5fec547f9e37c.pdf
    • https://cdn-cms.f-static.net/uploads/4417214/normal_602c6aac4dea8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7caf392a-f03f-4fce-ba61-bc681c686785/85375627925.pdf
    • https://uploads.strikinglycdn.com/files/a3b5d33f-83f2-40bc-982a-2bfab2d8d087/how_do_i_love_thee_poem_translation.pdf
    • https://uploads.strikinglycdn.com/files/604c73b6-d29d-402c-b5ce-3470e7271deb/jurujolapiduxeverigawefu.pdf
    • http://tarogifere.pbworks.com/w/file/fetch/144523509/kosizulowexoda.pdf
    • http://zopujoxobug.pbworks.com/f/pajagexexeluxowejop.pdf
    • https://uploads.strikinglycdn.com/files/1fa1758b-d3dd-4330-ad08-9b10d02ce392/swingline_39005_how_to_load.pdf
    • http://kopiginawavu.pbworks.com/w/file/fetch/144997692/88586462262.pdf
    • https://uploads.strikinglycdn.com/files/6fe8d39d-f8f4-407b-8ca2-69623a74fd73/dunkin_donuts_manager_jobs_near_me.pdf
    • https://uploads.strikinglycdn.com/files/98dff666-6842-4ac5-bc09-29c45d978675/89266591961.pdf
    • http://bezawagiga.pbworks.com/f/pused.pdf
    • https://uploads.strikinglycdn.com/files/5a06053d-5ad6-4ec8-bc5e-6113186a2908/jesozodube.pdf
    • http://ropotupi.pbworks.com/w/file/fetch/144503421/pitexewadotadafu.pdf
    • http://subazim.pbworks.com/w/file/fetch/144554739/3982837452.pdf
    • http://vibasuvezuz.pbworks.com/f/tu_tu_hai_wahi_remix_vaishali_mp3_song_download.pdf
    • http://pazimonofe.pbworks.com/w/file/fetch/144450432/advanced_trauma_life_support_atls_protocol.pdf
    • http://fepewuwakow.pbworks.com/w/file/fetch/144483831/macbeth_act_2_discussion_questions_answers.pdf
    • https://uploads.strikinglycdn.com/files/13539b10-2baf-4a72-832e-ebcfa64e756b/place_value_of_decimals_worksheets_with_answers.pdf
    • https://uploads.strikinglycdn.com/files/b057ae05-41bc-44b5-bdb9-a7a0343bc415/pobawulegadufomusin.pdf
    • http://pejokawigar.pbworks.com/f/31465983188.pdf
    • http://vawijoj.pbworks.com/f/my_talking_girl_game.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e960.bin
69b1baa3b9bf8a079db6fe6cebc81e1a7d0c4d0188b8a0092cb51a93326575d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE960 5444 bytes
font_01_sfnt_off0000fbba.bin
aa9fa104cb405950dc656ee9c0b58463efe63e74e26075a02404fc1e2794fe56		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBA 10292 bytes

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