Malicious PDF — malware analysis report

Static analysis result for SHA-256 011649cf00982cef…

MALICIOUS

PDF

226.9 KB Created: 2021-04-18 16:30:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: be95f9f596e2fc1806a633648df6c962 SHA-1: d8d2450c47f753d745f80ced93a4b27bf08ae08d SHA-256: 011649cf00982cefb5186b4a7b9ae1c922ff1f74c4a59dc0e76462fff4f082a0
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating phishing and trojan characteristics. An external URI pointing to 'crophysi.ru' was extracted, suggesting a phishing lure or malware distribution point. The document body, though heavily obfuscated, contains references that align with the 'Dracolich 5e monster manual' theme, reinforcing the lure. No scripts were extracted, but the PDF structure and external URL are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9876

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://crophysi.ru/strik?utm_term=dracolich+5e+monster+manual PDF link annotation
    • http://woxuruko.medianewsonline.com/how_to_work_out_simple_and_compound_interest.pdfIn PDF document text
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/desopusak-binikuzomupu.pdfIn PDF document text
    • https://jesugenug.weebly.com/uploads/1/3/1/4/131406432/tuzufojejezuxe_vutemebusar_tasemadijikadef.pdfIn PDF document text
    • https://jenodaxadow.weebly.com/uploads/1/3/4/0/134012655/8156072.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/98e246e5-a278-4e77-bea8-bbce679dbc66/96239507080.pdfIn PDF document text
    • https://65073a1a-0d84-4e9e-a472-5d702f6aa780.filesusr.com/ugd/c34eac_cae2664f6b674617b357d4e22901db46.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/94113b28-9fa4-4f68-ab40-11220df90b52/what_means_the_devil_take_the_hindmost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bb5f256-2238-4838-8c31-400d0dc20b04/seres.pdfIn PDF document text
    • https://13ea8442-998f-4f14-ba3b-7f37e53a414c.filesusr.com/ugd/008a9f_abe1b9eefee64eeebc9cd8240097cd20.pdf?index=trueIn PDF document text
    • https://d427386d-3434-45d9-8802-370857a594f4.filesusr.com/ugd/accd1f_bf6c16f89b2f4279b0173cc91d9a298d.pdf?index=trueIn PDF document text
    • http://wojotefeva.rf.gd/4_seater_side_by_side_1000_turbo.pdfIn PDF document text
    • https://189c2d36-84ff-4b81-9465-96c33c1d3b91.filesusr.com/ugd/35ddae_c85313d1118b4697b201afa04d6d4c31.pdf?index=trueIn PDF document text
    • https://56db2a4d-09ce-4ff6-a558-abb1d6727cd4.filesusr.com/ugd/003b86_c7103090522d4a08966dcd0de11320d9.pdf?index=trueIn PDF document text
    • https://59e5a08b-0d8d-455f-a3a7-35a3b781ab3e.filesusr.com/ugd/784815_1c3483f9177d4e5d9362d9fa763b405a.pdf?index=trueIn PDF document text
    • https://656adf98-7a81-40bd-8d0f-2b9c27d09201.filesusr.com/ugd/268ab1_e70c6cf5c61a4cb88da28dde28879b4b.pdf?index=trueIn PDF document text
    • https://05f6fcc2-a4c7-4d5b-b58c-97b640a93f4d.filesusr.com/ugd/74147a_178d0491888f4162b953feb7ce73e806.pdf?index=trueIn PDF document text
    • http://zimemotom.rf.gd/34459374022.pdfIn PDF document text
    • https://f1801c53-b3f5-4b94-a9b3-4bb8eb376a66.filesusr.com/ugd/af633f_85f66d27200a49ffa21f80f617ed1aac.pdf?index=trueIn PDF document text
    • https://3794eb9c-cc8b-492c-aecc-44533f76aaa6.filesusr.com/ugd/1ee69b_3f7bfcdc28ca4fa295ca8d2bd493032d.pdf?index=trueIn PDF document text
    • http://bagugexasorip.myartsonline.com/rapeniziripobugakuko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a1b3719-41a6-4b7a-b85b-b09762209507/is_the_undoing_on_hbo_a_series.pdfIn PDF document text
    • http://tewewib.rf.gd/ashta_lakshmi_ashtothram_in_telugu_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9010d21-a804-4c9a-9cf4-2191f4c4604d/xenefuje.pdfIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00032c50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C50 5164 bytes
SHA-256: 08bfeda96bc08ad5df6647f5f5727467d89f6e4ee3441d772cd9c1d3ab02218b
font_01_sfnt_off00033db4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33DB4 12716 bytes
SHA-256: 15099563d58b311fd294d292e99fdcd834be46522b6490461c1ad916ccfe58d1
font_02_sfnt_off0003670a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3670A 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e