Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a97d13d1e4a56e9…

MALICIOUS

PDF

85.4 KB Created: 2021-03-14 16:55:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17fdc9ac0f27733f04c4db5a602b461a SHA-1: 67db55ae1eef870c97f276c88793ca2f5bc80ee6 SHA-256: 9a97d13d1e4a56e9fee363f6c2f4f8b56c20e1c05150714a20f363f3d5ecbc92
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of this file. The document body, though heavily obfuscated, contains text that appears to be a lure, suggesting the intent is to redirect the user to the external URL for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://golowaki.ru/wix?keyword=serpent+bluff+ruins+door+that+won%2527t+open
    • http://wotidoteked.mywebcommunity.org/ansys_rigid_body_dynamics_tutorial.pdf
    • http://priz24.site/46781927690zg44z.pdf
    • http://souve.me/cirque_du_freak_seriesev0ex.pdf
    • http://callup.today/what_vision_places_take_medicaid8ymbg.pdf
    • http://sportplays.ru/najaxugoxonisawopapeje9kjpi.pdf
    • http://temppicture.xyz/tunaxavajexe9e5hf.pdf
    • http://optamorem.com/access_6_workbook_lsungenyqfam.pdf
    • http://mavigawika.scienceontheweb.net/92317127806.pdf
    • https://cdn-cms.f-static.net/uploads/4366048/normal_603da8ca9a901.pdf
    • http://sizuxofutitarax.mypressonline.com/stable_coronary_artery_disease.pdf
    • https://cdn-cms.f-static.net/uploads/4472788/normal_600d84aa203c5.pdf
    • http://devlp.club/how_to_clean_an_lg_inverter_direct_drive_washerftvom.pdf
    • http://wonder-ita.space/643490143476xpx7.pdf
    • https://static.s123-cdn-static.com/uploads/4424376/normal_5feff62e87e8e.pdf
    • https://static.s123-cdn-static.com/uploads/4366984/normal_5ff043ff2754b.pdf
    • http://parralax.net/what_poetic_devices_are_used_in_the_poem_digginguf2wr.pdf
    • https://static.s123-cdn-static.com/uploads/4414488/normal_5febe2ecbc99e.pdf
    • http://fovoxarofej.getenjoyment.net/z_table_confidence_interval_95.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/10ded312-95d0-4a5e-af6c-70a652103929/49361002308.pdf
    • http://dasobiviwadodaj.atwebpages.com/what_is_a_project_management_office_pmo_quizlet.pdf
    • https://uploads.strikinglycdn.com/files/0dae2d59-e321-4178-a7ef-5edd4694210b/welewufipaxiwiduxogadifuz.pdf
    • https://uploads.strikinglycdn.com/files/11df0d1f-e554-4aec-9ebd-ed6494227cba/14964355953.pdf
    • http://gonegexunu.myartsonline.com/93913099450.pdf
    • https://uploads.strikinglycdn.com/files/a70dd277-6454-42d8-bdb7-e905ad56845c/the_flower_of_life_spirit_science_6.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010096.bin
c97b7f3d811040a58f49a729496280733fc72514f2c23a506d51c538f2a029ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10096 5380 bytes
font_01_sfnt_off000112db.bin
8b079af5a7a98eca62670ce3848528070ea45a5d30371a9a0e817adf64fbae65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112DB 10860 bytes
font_02_sfnt_off00013799.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13799 4324 bytes

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