Malicious PDF — malware analysis report

Static analysis result for SHA-256 6233b3a276bcc195…

MALICIOUS

PDF

99.7 KB Created: 2021-04-03 06:07:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c0b9305c3583abae223a5755fa2be16 SHA-1: af9c1aeadf3e299a0f7ca069661cafed9e32a46d SHA-256: 6233b3a276bcc195ebfdd81ed1afc7706e7ffe01c87971bb3bf77f9641220624
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body, though heavily obfuscated, contains text related to downloading a PDF, and numerous URLs are embedded within the document, suggesting it is designed to redirect users to malicious sites. The presence of external URIs and embedded URLs points towards an attempt to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/award?keyword=descargar+contacto+carl+sagan+pdf
    • http://bit7.top/kazaxobebuza1dc7e.pdf
    • http://salet.store/rewrite_the_stars_piano_sheet_music_free46u5p.pdf
    • https://static.s123-cdn-static.com/uploads/4501963/normal_60018012c2e2f.pdf
    • https://static.s123-cdn-static.com/uploads/4407804/normal_5ff4ec5ae3e19.pdf
    • http://rusidaf.22web.org/68074069107.pdf
    • http://scm03.ru/can_the_netgear_ac1900_be_used_as_an_extender1g5o9.pdf
    • http://qunit.space/timed_up_and_go_testn6pgs.pdf
    • http://hushseo.online/110908013814k3ej.pdf
    • https://jabenawonidibe.weebly.com/uploads/1/3/5/3/135385032/dixanig.pdf
    • https://lixubirenolona.weebly.com/uploads/1/3/4/6/134669397/1712402.pdf
    • http://themarkuzmusic.com/89440967139ealr.pdf
    • https://sasikivi.weebly.com/uploads/1/3/4/4/134462450/61e6ba42a3f1.pdf
    • https://cdn-cms.f-static.net/uploads/4385038/normal_605f95799196d.pdf
    • https://cdn-cms.f-static.net/uploads/4407810/normal_602894c300ea2.pdf
    • http://1xbet-football.fun/how_to_make_questionnaire_for_research_pptq0j9l.pdf
    • https://toripifisesu.weebly.com/uploads/1/3/4/3/134367164/5982842.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/290a2333-dee9-44f4-b17a-7a470312603d/the_edge_of_never_audiobook_free.pdf
    • https://uploads.strikinglycdn.com/files/bcba67cb-e475-4f19-8dc9-1836a2fc0ce8/what_is_the_nature_and_scope_of_social_and_political_philosophy.pdf
    • http://jezeladi.rf.gd/71044599447.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_off000144ba.bin
98081d10b0604b30bb6354ee921b66b240ac80875fb84cccb7fb6867e69968c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x144BA 5320 bytes
font_01_sfnt_off000156e8.bin
d5fbcf16722f7b0f7cfd6f22ef63886ef77bc9844388a51fc7357f343b98545c
pdf-font-stream PDF embedded font (sfnt) at offset 0x156E8 12672 bytes