Malicious PDF — malware analysis report

Static analysis result for SHA-256 366da189cca99f0f…

MALICIOUS

PDF

70.7 KB Created: 2021-03-15 13:18:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 187a299ba9e162a144e895cc7e1c393a SHA-1: d01255ac2df07f2d9e3b38166a8f3ae73dab98d2 SHA-256: 366da189cca99f0f2548a4f3d60931b0a4a17fcc3f28020397d426f073643560
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an embedded URL that directs users to a suspicious domain, likely to host further malicious content or phishing pages. No scripts were extracted, but the presence of an external URI suggests a redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/wix?keyword=nursing+fundamentals+study+guide
    • https://tutolotirudob.weebly.com/uploads/1/3/5/3/135393716/8588534.pdf
    • http://pigigozoruda.mypressonline.com/john_belton_american_cinema_american_culture_4th_ed._by_mcgraw-hill.pdf
    • https://lumewogomor.weebly.com/uploads/1/3/4/3/134319436/mirukotimo.pdf
    • https://lodufifed.weebly.com/uploads/1/3/1/4/131411197/vevut_xezeratig.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dinisemowoge/gifimomatagelizupuger.pdf
    • https://df1882fa-13c5-42f1-8438-577935b594b9.filesusr.com/ugd/91932b_2547234e32f7430eac0bbbc6f7e5817b.pdf?index=true
    • https://79d86aa2-23c4-4aa0-a0dc-c16ac59ae55d.filesusr.com/ugd/ecb701_3f5f11febbfd4a2fa5d626a8fe2ecfeb.pdf?index=true
    • https://uploads.strikinglycdn.com/files/5a127e06-12d7-4b3e-863c-87d35d06833f/funeti.pdf
    • http://gototura.myartsonline.com/fluid_dynamics_simulation.pdf
    • https://s3.amazonaws.com/zufaxepixiguxax/what_is_a_supply_chain_performance_management_system.pdf
    • https://s3.amazonaws.com/wupagivoz/jio_rockers_2019_telugu_movies_donga.pdf
    • https://uploads.strikinglycdn.com/files/ad98fcf2-ae44-41e5-902d-eb8a6251228b/revuvoxixafadotetozutov.pdf
    • https://uploads.strikinglycdn.com/files/98effd08-1e4f-4668-a886-c064e30887da/pejiwovidazakowi.pdf
    • https://uploads.strikinglycdn.com/files/c3713c6d-fa96-4b27-b666-aeb2b6940605/how_much_does_it_normally_cost_to_install_a_water_softener.pdf
    • https://ac614e2c-2e00-43e4-a80f-2c6bce9fb64b.filesusr.com/ugd/f103bb_df82b4a2d45b48caaeac6bbc71fd0314.pdf?index=true
    • https://e0ff2378-281a-4ea3-95ae-419c526fdc99.filesusr.com/ugd/0baf77_d241c668eea6459ebe244c45a51c1320.pdf?index=true
    • https://850a36a1-966c-46c3-86ed-e15bcb5778a7.filesusr.com/ugd/ede58b_4801c2372cf54d76a6d79de4dac4618b.pdf?index=true
    • 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_off0000d65b.bin
29977053b38bec2b5f0dead509d328fe291cd0a5f83beb54b94c2b00fe082ba7
pdf-font-stream PDF embedded font (sfnt) at offset 0xD65B 5296 bytes
font_01_sfnt_off0000e858.bin
1afcee20376234d657fc0a2a37cf39eefde978693013ef726e4ac6307c0bd025
pdf-font-stream PDF embedded font (sfnt) at offset 0xE858 11040 bytes