Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f9b003ab8989627…

MALICIOUS

PDF

86.1 KB Created: 2021-03-08 17:22:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 971f610bccd51439b3f905b21013d780 SHA-1: 52d11c10354f62d49cd3e536928766793a6a2f56 SHA-256: 2f9b003ab898962768b167284885decf45be3f3abf539e9343ab188cbcd0441c
96 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating external URI usage and is flagged by a machine learning classifier and ClamAV as malicious. The document body, though heavily garbled, appears to be a lure related to a product test, directing users to a suspicious URL. The presence of embedded URLs suggests an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://nipisod.ru/strik?utm_term=sennheiser+rs+120+ii-8eu+funkkopfh%25C3%25B6rer+test
    • http://tlgfree.xyz/faseriviximeaa44h.pdf
    • http://rebezun.mygamesonline.org/karcher_repair_near_me.pdf
    • https://cdn.sqhk.co/sopiloroda/aPgQjh6/25148479740.pdf
    • http://worabipupe.mypressonline.com/acting_out_culture_james_miller.pdf
    • http://bioforcecolumbia.site/do_all_covalent_bonds_dissolve_in_waterix8sj.pdf
    • http://rosutob.getenjoyment.net/what_day_does_the_wu_tang_show_come_on.pdf
    • http://wefilevazobakeb.mypressonline.com/where_abroad_is_hot_in_april.pdf
    • https://cdn.sqhk.co/posojuvapono/X0iaibv/42144074154.pdf
    • http://nuvagefo.medianewsonline.com/bizali.pdf
    • http://afracheat7.xyz/whats_newsmax_tvx0j19.pdf
    • http://podarokinsta.site/89449514048jtxy.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/somamere/bootstrap_components_free.pdf
    • https://s3.amazonaws.com/minabiwa/texib.pdf
    • https://2987c0f4-171e-4473-b3f1-a5468658115b.filesusr.com/ugd/75ff8a_9bf499496ffe4b43a9e597b48c5aa0ac.pdf?index=true
    • https://s3.amazonaws.com/jazamerijekufol/bombsquad_pro_apk_1._4._146.pdf
    • https://s3.amazonaws.com/ronatiduzoxij/2019_joint_commission_survey_guide.pdf
    • https://75a697d3-84f0-44cf-bab9-f05e37020c50.filesusr.com/ugd/7c3584_702fbecbc7384369ad11671303294de3.pdf?index=true
    • https://s3.amazonaws.com/fusopoxipo/oncology_nursing_resume_template.pdf
    • http://gudugapapilile.atwebpages.com/how_to_clean_cuisinart_dcc-1100.pdf
    • https://7fc1e5b2-1dd8-4457-9de2-3dea1ab9f589.filesusr.com/ugd/fedd61_5f531ecaca59471386f13cc50540132a.pdf?index=true
    • http://visugog.myartsonline.com/30171063124.pdf
    • http://pidodexogejax.myartsonline.com/74646746737.pdf
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_e64dbe2b1ca94f4fbfc5f5310dec1f78.pdf?index=true
    • 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_off00010ec5.bin
727be05384cdb5e3e26ab887a5b45ed074dbeb0fda5e6622335922520be2f4fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EC5 5604 bytes
font_01_sfnt_off000121a0.bin
832ad67994e3e86f36e5599ddcfbe861d6a2c8ff88447c6e15f5059797350ace		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121A0 11860 bytes

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