Malicious PDF — malware analysis report

Static analysis result for SHA-256 3046fd6c2a40d08c…

MALICIOUS

PDF

78.1 KB Created: 2021-03-28 19:34:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34a9041e9680086c41e693378f7cd8d0 SHA-1: b061dce84c9f7eb05ab1a5ae86ba6635db9b3cd2 SHA-256: 3046fd6c2a40d08c328992cbf4e4ca2d6d982773d924066ec8c8f2b9c880b33c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI that mimics a search result for '201 core java interview questions javatpoint pdf', which is likely a lure to direct users to a malicious website. The document body is heavily obfuscated, but the presence of external URIs and the high confidence threat detection indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lozipotod.ru/award?keyword=201+core+java+interview+questions+javatpoint+pdf
    • http://kujamemapevubu.mypressonline.com/hermle_clock_movements_manual.pdf
    • http://bighome.space/38634216498hsn14.pdf
    • http://spain50off.info/which_degree_is_best_for_data_sciencexxjt8.pdf
    • http://vovality.club/chocolate_desserts_recipes_easy2dbrw.pdf
    • http://lologunaw.mygamesonline.org/math_formulas_for_gre.pdf
    • http://shoop-ft.ru/xabawowesifolosigiwojazui5hhg.pdf
    • http://ses-paypal.com/pipe_bending_machineas7ft.pdf
    • http://boevoenlp.com/49090256062ntyyb.pdf
    • http://meinekarten.best/1646267105832aze.pdf
    • http://fonujameritules.getenjoyment.net/burmese_language_basics.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xamapebonijos/how_long_is_the_blind_side_movie.pdf
    • http://rejekokamikax.rf.gd/53691041629.pdf
    • http://pevixogojo.epizy.com/dish_network_deals_for_returning_customers.pdf
    • https://s3.amazonaws.com/tiluwisulepam/jegixo.pdf
    • https://s3.amazonaws.com/kujapomib/thinkpad_t430s_ram_type.pdf
    • https://s3.amazonaws.com/tuxenipup/xuxobafesijakubanebavenur.pdf
    • http://runapapaxezupow.rf.gd/wutulujilevovosogux.pdf
    • https://s3.amazonaws.com/dezajok/nekubonafati.pdf
    • http://jajuzefob.rf.gd/baul_song_webmusic._in.pdf
    • https://s3.amazonaws.com/veraxawewib/83236098933.pdf
    • http://rapaxaj.rf.gd/mogedumupuzaza.pdf
    • https://s3.amazonaws.com/donukadizolin/the_southern_reach_trilogy_explained.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_off0000f31e.bin
cfa0fe6c9e3547ae48397e4a8d84b04268acc8502739e64a67362b2e70d770f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF31E 5700 bytes
font_01_sfnt_off000106b2.bin
fde9c0a46c7ea5e28e5f14ba5e4d5d28a991d24d9684931e8cc571db4b2e94a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106B2 10536 bytes

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