Malicious PDF — malware analysis report

Static analysis result for SHA-256 f31c4349fde5e5ca…

MALICIOUS

PDF

77.8 KB Created: 2021-02-16 17:17:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ac79e9c2345a0534c00bfbca01b0f559 SHA-1: 58717d2f225022ffa85b9befd0bc082a18a54473 SHA-256: f31c4349fde5e5ca90d8ef942555aeccaae0a31c4b2830199ef412372e86cc87
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/123?utm_term=7th+grade+math+pretest+with+answers PDF link annotation
    • http://trickyturkey.com/esl_much_many_exercisesxh0gs.pdfIn PDF document text
    • https://cdn.sqhk.co/joxopejufito/rjfigij/parallel_universe_love_quotes.pdfIn PDF document text
    • http://bepegut.iblogger.org/autotune_free_fl_studio.pdfIn PDF document text
    • http://shopsupergood.site/creative_cloud_cleaner_tool_mactherr.pdfIn PDF document text
    • http://khareedforosh.com/toxusojoxajokusilixejkiisn.pdfIn PDF document text
    • http://samozanyat.info/effective_communication_skillsvnr19.pdfIn PDF document text
    • http://halfraire.xyz/455491925717fjm5.pdfIn PDF document text
    • https://cdn.sqhk.co/sepovili/jafgdge/galaxy_theater_riverbank_tickets.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/gYhchge/71263192901.pdfIn PDF document text
    • http://site-shop.xyz/best_android_tv_box_2019_south_africarw1bo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/rotowan/73338103364.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/self_assessment_template_for_managers.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/bunelel.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/film_sherlock_holmes_season_5.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/gipexikejemomi.pdfIn PDF document text
    • http://xuwugufufokiti.epizy.com/alcatel_one_touch_pop_5022e_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/endocarditis_guidelines_european.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/kowugizalapewinesatata.pdfIn PDF document text
    • http://xuvemotoguno.epizy.com/punuzumipusawupemixi.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/pacific_textiles_holdings_ltd_annual_report.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e17a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17A 5096 bytes
SHA-256: 9de99186b437ad881ea0cc6e586ff61a239384129c79d2b6593567d0eb4c1cd9
font_01_sfnt_off0000f2b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B8 12240 bytes
SHA-256: 5c8536633315d79b8138ba5e52661aec43cd47caccdc87e1c3fc3fbabf4f4e60
font_02_sfnt_off00011b83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B83 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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