Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5272c6d46ea8c30…

MALICIOUS

PDF

97.7 KB Created: 2021-03-06 23:55:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b2641af2a651f81668b38a923605cc1 SHA-1: 024463da1aa7d2213f32dac9a65e0c7c7c17c041 SHA-256: c5272c6d46ea8c301b91f11e424963e3b7b415f47d2dae5ee2f49b71b35558df
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs. The document body, though heavily obfuscated, contains text related to 'Dua for travelling on plane in arabic', suggesting a lure. The embedded URL points to a suspicious domain, likely serving a malicious payload or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/wix?keyword=dua+for+travelling+on+plane+in+arabic
    • http://instapriz365.online/sobezupozufexofzmj1v.pdf
    • https://static.s123-cdn-static.com/uploads/4494452/normal_5ff38b9cedf66.pdf
    • https://vapevaka.weebly.com/uploads/1/3/1/4/131407737/vakanaxoxo.pdf
    • http://laitlabs.pro/popokowekhit3v.pdf
    • http://dukifikepiloj.iblogger.org/cinder_spires_book_two.pdf
    • https://dadotetixaj.weebly.com/uploads/1/3/4/4/134404583/36b8d26c17.pdf
    • http://onlinetyz.xyz/the_language_of_prejudice_by_gordon_allportdybq2.pdf
    • https://timijajuvage.weebly.com/uploads/1/3/2/6/132683040/sokesufexoje-mesimaduluke-sosariwe.pdf
    • http://verenica.net/zinobetofusemudefolqmjaw.pdf
    • https://rapironid.weebly.com/uploads/1/3/1/3/131398378/bbab50263d4.pdf
    • https://cdn-cms.f-static.net/uploads/4379973/normal_6026833e6bca5.pdf
    • http://tulavesew.getenjoyment.net/18773151800.pdf
    • https://woxarupuxanuma.weebly.com/uploads/1/3/1/3/131383908/limepumox.pdf
    • https://wezefumuge.weebly.com/uploads/1/3/4/6/134614004/35081300f2b8.pdf
    • https://cdn-cms.f-static.net/uploads/4464313/normal_60435c6dbcabd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://goduzidexemave.epizy.com/ielts_answer_sheet_task_2.pdf
    • http://dubafelizam.epizy.com/31891035810.pdf
    • http://lewinozed.atwebpages.com/how_to_get_the_area_of_an_isosceles_trapezoid.pdf
    • http://lenixad.epizy.com/ranexitipeluxebowifi.pdf
    • http://tozibuxadotoba.epizy.com/kugudel.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00014458.bin
9f53af0c24a7062cbd907adcce439af6f905597b3ec1a74feeea11e59ba254ee
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x14458 29348 bytes
font_00_sfnt_off00011142.bin
2cfa96087747892b6a30d71f2037fbc0b97c5e3b531fb5e874a3d6b95f8f4632
pdf-font-stream PDF embedded font (sfnt) at offset 0x11142 5204 bytes
font_01_sfnt_off00012319.bin
66f2c5febe4d7eca04c00bc4f74332324c56f49a58504badf3366211fa4eef5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x12319 9704 bytes