Malicious PDF — malware analysis report

Static analysis result for SHA-256 84289fb84eb90052…

MALICIOUS

PDF

82.4 KB Created: 2021-03-13 14:20:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3267ca1556b02eaa5df03d17d504120e SHA-1: 97fa751f6db2356119dd465d6425abbadf644122 SHA-256: 84289fb84eb90052a47dddfe682817f6d527480d91042b6298361463e0364988
96 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan and an ML classifier returned a high probability of maliciousness. The PDF contains an embedded URI pointing to 'maypoin.ru', which is likely a phishing or malware distribution domain. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's intended to trick users into navigating to a malicious site, aligning with spearphishing tactics.

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://maypoin.ru/wix?keyword=presonus+firebox+manual+pdf
    • http://barcaporirternet-interbank-pe.com/jinopakewadimezaxiwinosah4lxc.pdf
    • http://nefritthebestthing.site/jfk_movie_scriptvjp1z.pdf
    • http://presentinsta.site/13066295541weoy6.pdf
    • http://kupiokno.su/how_do_you_test_the_spirit_of_godbqupu.pdf
    • http://trynutra.shop/burefulipudoxisizo0qwlm.pdf
    • https://cdn.sqhk.co/kugefiruxat/haNRjbb/91075452740.pdf
    • https://cdn.sqhk.co/merabuvi/ijfghid/lovevetimifos.pdf
    • https://cdn.sqhk.co/xawobovuji/HfGzogc/74344073756.pdf
    • https://cdn.sqhk.co/bexutavukaro/dDhhihc/mogimi.pdf
    • http://drnextact.xyz/86344708703iffxs.pdf
    • https://cdn.sqhk.co/zuronenom/1W5vgfY/71332441318.pdf
    • https://cdn.sqhk.co/riraxizilob/ihuPP39/vitevibalozifinafe.pdf
    • http://mebelrostov.ru/why_did_absolutism_succeed_in_francetxh9w.pdf
    • http://kostlike.site/navneet_rana_mp_maharashtraw6peq.pdf
    • https://cdn.sqhk.co/xubuguxovim/vMhaheQ/zinerilikegovofu.pdf
    • https://cdn.sqhk.co/nobixapo/djoThja/mobile_doctor_t_nagar.pdf
    • https://cdn.sqhk.co/gabixeme/cJhhhfL/95386432521.pdf
    • http://trenolgia.buzz/addie_model_bookf8amj.pdf
    • http://ilkertr.shop/rupuwojexujenadukafufeniag8tl.pdf
    • http://center-about.com/describe_your_house_worksheethyf0u.pdf
    • http://crispyset.online/natatumifawmem0r.pdf
    • http://vinograd.io/test_statistic_for_paired_t_test_formulaxpdsm.pdf
    • http://copyright-infringement.business/coursera_cryptography_final_exam_ansjudqa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e9a65428-0dd0-4d95-984b-90cba857d017/big_green_egg_table_nest_amazon.pdf
    • https://uploads.strikinglycdn.com/files/1e19b8ec-8bd7-4800-87ba-d336965783ae/casio_g-shock_ga110rg_black__rose_gold.pdf
    • https://uploads.strikinglycdn.com/files/1bc86e21-e486-458b-994e-b9016bff6855/28395093906.pdf
    • https://uploads.strikinglycdn.com/files/8be23776-b4c1-4129-86cb-0cf5d87a2c14/panofegerogemobemuniw.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_off0001021d.bin
a0227b077dd0fce3612a7a4b331507148efdecfe25a0ccc6d9407302b2761b4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1021D 5396 bytes
font_01_sfnt_off0001145c.bin
40e4c2325d453913434157affe5fba89d0992f1b007ea6ab676b28014492f67a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1145C 11236 bytes

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