Malicious PDF — malware analysis report

Static analysis result for SHA-256 64422811776d156f…

MALICIOUS

PDF

92.6 KB Created: 2021-03-16 11:16:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69f306211be610074b7ccf5eec6bd4a6 SHA-1: 9d03d7dc3eec1f3a52729e89b19347313e176d25 SHA-256: 64422811776d156f7d83a6f61af5e746edd6bfc24a480401086fdb2d002b8adc
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' and 'PDF_URI' heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan. The embedded URLs are likely used to redirect users to attacker-controlled sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xezojetit.ru/123?utm_term=unreal+tournament+3+weapons+guide
    • https://cdn.sqhk.co/dedenijikal/jgihgZS/homeschool_planner_free.pdf
    • http://pogadai.xyz/658813187808kj0a.pdf
    • http://academic-club.ru/how_to_get_excel_data_analysis_toolpakm2rmg.pdf
    • https://kovozewiridudu.weebly.com/uploads/1/3/0/7/130738567/1743857.pdf
    • https://musisemikalig.weebly.com/uploads/1/3/4/6/134694348/6880016.pdf
    • https://semukozev.weebly.com/uploads/1/3/4/4/134493414/c4f2a8d.pdf
    • https://josapepukixo.weebly.com/uploads/1/3/1/3/131384602/e5013e7ec68212d.pdf
    • http://linefofaxugedu.mywebcommunity.org/bosquejos_biblicos_para_predicar_evangelisticos.pdf
    • https://gizutiki.weebly.com/uploads/1/3/4/4/134478998/ffd52bad.pdf
    • https://punoburewi.weebly.com/uploads/1/3/4/3/134305970/vezazibaze.pdf
    • http://telgrm.site/a_christmas_carol_movie_2019_netflixaw7vb.pdf
    • http://lolkek.xyz/don_t_speak_her_name_sheet_musicp780z.pdf
    • https://tejojapifofomo.weebly.com/uploads/1/3/4/3/134339563/6081181.pdf
    • https://mizinunebij.weebly.com/uploads/1/3/4/6/134660950/pukitonoti_desexafuvid_releg.pdf
    • https://cdn.sqhk.co/reruzemafow/yniaha3/87025457841.pdf
    • https://tafebitekule.weebly.com/uploads/1/3/0/7/130776603/4991789.pdf
    • http://zikewexer.scienceontheweb.net/los_rios_de_color_purpura_2_espaol_latino.pdf
    • http://magazinrf.xyz/14759785753qysbz.pdf
    • https://zupawifotifawe.weebly.com/uploads/1/3/4/4/134480263/9674138.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2b384c06-f45a-45ab-84d9-f0a264f66056/4908694964.pdf
    • https://uploads.strikinglycdn.com/files/ebdabea2-bb03-4b40-92fd-194363f7dc98/temoxofejifo.pdf
    • https://uploads.strikinglycdn.com/files/6486f29e-8d01-41c0-af1c-771c2c5229a2/jeu_de_carte_francais_roi.pdf
    • https://uploads.strikinglycdn.com/files/ab1f6a69-bc1e-494a-82b2-3890d1b972c1/95179972326.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00010346.bin
0d17e3fc404b65fbcbac9517daa45591a36fd50f7fe4759df5901d2d12c40ccb		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10346 4536 bytes
font_01_sfnt_off00011335.bin
0699ec05cac41d63e58be3c10c3eecbd89fca9cb68da075d6ffa74e527d7eb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11335 5528 bytes
font_02_sfnt_off000125fb.bin
9c37d0bfb7205a30e3117675568cc4588752521c5a01308f93242f4313b94ddf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125FB 11852 bytes
font_03_sfnt_off00014e94.bin
31aa257675234f953cb39254c73a0c002637764ec2691c470e0912636c3685cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14E94 16204 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.