Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b06003eb2c05de…

MALICIOUS

PDF

78.4 KB Created: 2021-04-07 08:12:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: ba0347e6abe31cab751a584b2db3f34a SHA-1: d7f9ae9765e4a0abb28f27478eaed4b968cdd6f4 SHA-256: 64b06003eb2c05de977c5b76fb927d61d095ff39333718fb8107bade4e693c7f
126 Risk Score

Malware Insights

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

The PDF contains numerous external URLs, with several pointing to disposable domains and link farms, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ponafet.ru/123?utm_term=annadata+bengali+songs PDF link annotation
    • https://cdn.sqhk.co/dasofuduveje/Qyordig/jofujurovuxuwafove.pdfIn PDF document text
    • http://gojawufeki.getenjoyment.net/lg_g2_mini_factory_reset_status_2.pdfIn PDF document text
    • http://online-bestshop.xyz/rebalevovumijidifutiwuloz7yp1i.pdfIn PDF document text
    • http://blognews.top/budweiser_copper_lager_nutritional_informationhfv2p.pdfIn PDF document text
    • https://cdn.sqhk.co/tokebamojos/NqjbhiC/cake_cutter_set_gold.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/ghggIih/ponijize.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476282/normal_5fd0580d96c72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464878/normal_5fcc8fdf931e0.pdfIn PDF document text
    • https://cdn.sqhk.co/tovisegag/zijOvtg/luniput.pdfIn PDF document text
    • http://levotavo.scienceontheweb.net/34161702438.pdfIn PDF document text
    • http://xeberok.getenjoyment.net/xefejakego.pdfIn PDF document text
    • http://visiblawty.com/zipulapuxeganowakuvp02zw.pdfIn PDF document text
    • http://molotkov.site/what_happened_to_the_radical_republicanshl9cx.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/how_to_make_rice_wine_step_by_step.pdfIn PDF document text
    • http://winfreeiphone.xyz/chal_chaiya_chaiya_song_lyricsqkx2y.pdfIn PDF document text
    • http://rotixumuzu.22web.org/menschen_a1._1_test_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/luvunugoz/icVRggd/galaxy_warriors_toys.pdfIn PDF document text
    • http://zumubexupon.22web.org/mole_calculation_worksheet_answer_key_with_work.pdfIn PDF document text
    • http://digovin.getenjoyment.net/disadvantages_of_parliamentary_system.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b6b48848-b4e5-45fa-8615-5078b9c10b0e.filesusr.com/ugd/94e5ef_081f2bfd630d45d89d5a7a795bec5490.pdf?index=trueIn PDF document text
    • https://a2fe464c-28d1-4db8-bb2d-552ad9bc2f4d.filesusr.com/ugd/941bb1_b3629b2a86764cafaf8bdc42189baf80.pdf?index=trueIn PDF document text
    • http://sulonofanez.rf.gd/23673502484.pdfIn PDF document text
    • https://e26976e3-f089-44cc-a2a6-54bcc6cae308.filesusr.com/ugd/0df15e_148c750edcc14ca881dca586cb8714ec.pdf?index=trueIn PDF document text
    • https://b23183eb-b2e5-455e-bc25-91fac1efd10f.filesusr.com/ugd/cc14e4_2e4fefb645444c8487dc06f4d41a47f2.pdf?index=trueIn PDF document text
    • https://5c126656-fc4f-473b-8c99-11744d2e1b96.filesusr.com/ugd/abd8ec_cdc676ae9218422a9747bc7213d293d7.pdf?index=trueIn 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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e62a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62A 5028 bytes
SHA-256: b129b2bd44b85dddfe6a3bbbcd70a72563825bd624bdf2ae6199e5445f1fa449
font_01_sfnt_off0000f74d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF74D 4448 bytes
SHA-256: f20ad6c040fa2d99dfa2bbc7c1569a2e43b4bea59ab46ef7b3eb2b111018f348
font_02_sfnt_off000105a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A3 11192 bytes
SHA-256: 32d37ba24044d8461b615a23281831f11e10dba8dfd29001961fa2117d95bfa1