Malicious PDF — malware analysis report

Static analysis result for SHA-256 c75089b27e632dae…

MALICIOUS

PDF

91.6 KB Created: 2021-03-09 06:44:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 979b6ed7c801a11a315776883e526a7a SHA-1: e969f78f6f6144c86581b61dd91dc22ed1b7cbfa SHA-256: c75089b27e632dae9b109d134f6ab1e4397383adb4618a2358e487e4681e95a2
96 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body text, though heavily obfuscated, contains keywords related to marketing information, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://pelibifir.ru/123?utm_term=marketing+information+system+includes
    • http://pigalimiru.medianewsonline.com/99623926151.pdf
    • http://laluwaraselolar.mywebcommunity.org/tp-link_tl-sg1005d_not_working.pdf
    • https://static.s123-cdn-static.com/uploads/4480585/normal_5ff44d944c7ac.pdf
    • https://static.s123-cdn-static.com/uploads/4460060/normal_5fc7fe6383728.pdf
    • https://cdn-cms.f-static.net/uploads/4454819/normal_602e3e98370eb.pdf
    • https://cdn-cms.f-static.net/uploads/4476567/normal_60111a3c360c4.pdf
    • http://lubevos.scienceontheweb.net/telijonatawurumifapave.pdf
    • http://fezelegafefuv.mywebcommunity.org/dymo_letratag_xr_user_manual.pdf
    • http://lunatan.medianewsonline.com/97256886729.pdf
    • https://cdn-cms.f-static.net/uploads/4407784/normal_60243a21b392d.pdf
    • https://cdn-cms.f-static.net/uploads/4470985/normal_60377a3e45007.pdf
    • http://kitukotobov.medianewsonline.com/fender_hot_rod_deluxe_amp_settings.pdf
    • https://cdn-cms.f-static.net/uploads/4457577/normal_5fe6cd3d9c559.pdf
    • http://xejapuz.getenjoyment.net/xazerivadadageb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/226913b7-fa50-4c7d-a231-749c3a36e142/joketejedetalilukefuwagud.pdf
    • https://uploads.strikinglycdn.com/files/c8f91189-5e68-4b6d-b257-ec54a7c8e502/5380415858.pdf
    • https://uploads.strikinglycdn.com/files/b1e772f6-c924-46bd-b777-88b17efc498b/36615082388.pdf
    • https://uploads.strikinglycdn.com/files/87a28666-e18d-4371-828a-1428b005d6a3/how_to_use_data_science_in_manufacturing.pdf
    • https://uploads.strikinglycdn.com/files/82c9a1ce-7f62-402b-865d-24c34d18012d/thomas_merton_no_man_is_an_island_free.pdf
    • https://uploads.strikinglycdn.com/files/40e759a5-2e5f-4967-81c0-f271214ba227/how_to_write_data_analysis_in_research_example.pdf
    • https://uploads.strikinglycdn.com/files/b2f1b88f-c1da-4256-ba70-84c419e2089f/the_witcher_book_goodreads.pdf
    • https://uploads.strikinglycdn.com/files/ffa4fba7-2fbf-4ed1-8c19-c033e1184137/84143193734.pdf
    • http://resilasijajatil.myartsonline.com/how_to_rig_a_live_bait_for_bass.pdf
    • http://wugujub.onlinewebshop.net/fibijinurulimed.pdf
    • https://uploads.strikinglycdn.com/files/fa63c060-ce5c-4123-9d3b-f230fbc3aa3b/42932231112.pdf
    • http://baxewape.myartsonline.com/como_crear_un_archivo_txt_en_la_terminal_de_linux.pdf
    • https://uploads.strikinglycdn.com/files/c1d7bf62-ec4a-46cb-a937-6e7f577c2d94/74734184356.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_off00012a66.bin
cd51d24e01a31b62bf90e7861d1a52d8f24106ab48a06a742bb8784ae5ff0827		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A66 5512 bytes
font_01_sfnt_off00013d28.bin
13c5226eedcbfd8693a37ed70b61d9c030ee38769a0204d6e43d2adcd96b5e9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D28 10348 bytes

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