Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c2600a4493618c8…

MALICIOUS

PDF

81.3 KB Created: 2021-04-02 10:32:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 086b06a7f51ec8fcfd2e1529199452f5 SHA-1: 7e0ff678e61436f824546622cd64fc69ea10dbe7 SHA-256: 6c2600a4493618c84bae6f4e577bd273f1dc3ce2ead3139ede67c856a9e907e8
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 attempt. The ML classifier and ClamAV detection further confirm its malicious nature. The document body, though heavily obfuscated, appears to be a lure related to 'Flight 401 survivors list', likely intended to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/wix?keyword=flight+401+survivors+list
    • http://xelowonol.scienceontheweb.net/bilivetu.pdf
    • http://lowafax.22web.org/72007519447.pdf
    • http://sapazukuwujoji.22web.org/beam_ends_errol_flynn.pdf
    • https://cdn-cms.f-static.net/uploads/4447270/normal_6029989128ce4.pdf
    • http://baykamif.space/suzuxesanakotasgh3vp.pdf
    • http://bivoliku.mywebcommunity.org/sulere.pdf
    • http://jubogori.iblogger.org/synonyms_list_of_words.pdf
    • https://cdn-cms.f-static.net/uploads/4366357/normal_601ac20639422.pdf
    • http://spainsale.pro/adaraya_agamaki_original_video_song6kapr.pdf
    • http://rojibitakuvekuw.scienceontheweb.net/sujib.pdf
    • http://itverys.space/first_aid_step_1_2021_changess7gj8.pdf
    • http://varistop.site/kenwood_tm_d700_manual_specialized_communicationsnv5xr.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fiwimawa.rf.gd/brahmamgari_burrakatha_video.pdf
    • https://2ddedb0e-b7b0-41c9-a8bc-c018bd0e6e4c.filesusr.com/ugd/70094d_0f8be002b7b4456cb3a01e1a8eb2ba6f.pdf?index=true
    • https://f50ece36-1901-4a7b-9396-968a400df7f4.filesusr.com/ugd/3ecb95_ef41d093316442afa21f33efcc9537cb.pdf?index=true
    • https://uploads.strikinglycdn.com/files/6eea8b34-dbee-4bc7-873c-b017bf2c54fb/xobazebiwokabit.pdf
    • https://uploads.strikinglycdn.com/files/ef0bd5e3-1c13-48ed-8fdf-db1a449e29fa/vesigalevebisofajiv.pdf
    • https://uploads.strikinglycdn.com/files/9f14a4e0-523b-43fc-a77c-c0d4d0b99814/spd_sx_pad_link.pdf
    • https://uploads.strikinglycdn.com/files/476b7aa7-6e0e-4c0d-aeac-d627af567c73/zoom_505_ii_guitar_manual.pdf
    • http://fomosixojuvese.rf.gd/71198837297.pdf
    • https://uploads.strikinglycdn.com/files/6a8d7fa8-4b9e-4be1-be7c-b6e7dbe0f3ff/jikugebalutuji.pdf
    • http://miwewugewu.atwebpages.com/93707095998.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_off0000ffd1.bin
92c31cfb5a925e7d80502bbf73573ceeefd777659c55c661349fb19474cbadf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD1 5032 bytes
font_01_sfnt_off00011105.bin
ee5edb852ca949134fd20c53b345fc7ddbd552c0e0b9e4b4deeb22f447db6ae5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11105 11856 bytes

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