Malicious PDF — malware analysis report

Static analysis result for SHA-256 58ecf7e871f6cfd3…

MALICIOUS

PDF

77.5 KB Created: 2021-03-27 16:08:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b353395b77e15f993bd0763d6bab6673 SHA-1: 41bedc87601e84f95593f18f942b86d39376fc58 SHA-256: 58ecf7e871f6cfd372804c562ccfe26ed752fde255517bcb86cc79d449ab5904
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The presence of an external URI suggests an attempt to redirect the user to a phishing or malware distribution site.

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://golowaki.ru/123?utm_term=2d+continuous+wavelet+transform+python
    • http://majikok.mygamesonline.org/set_time_on_pioneer_super_tuner_iii_d.pdf
    • http://birojuxadafek.iblogger.org/john_proctor_quotes_the_crucible.pdf
    • http://zexitekaxob.mypressonline.com/gevezagikosasagogivig.pdf
    • https://najatiwexit.weebly.com/uploads/1/3/4/0/134041182/kazexuki.pdf
    • https://merusomewazotom.weebly.com/uploads/1/3/4/5/134514041/6983469.pdf
    • http://pijaparafagime.iblogger.org/when_does_blood_clot_form.pdf
    • http://pusewuvi.medianewsonline.com/4._what_are_the_different_abbreviations_for_the_different_measurements.pdf
    • http://dixefez.iblogger.org/ocarina_of_time_player_s_guide.pdf
    • http://voxovisigad.iblogger.org/girl_beatles_piano_sheet_music.pdf
    • http://zotuxizuso.iblogger.org/72446430566.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/d7955b59-b766-4ebf-865e-cca37fff50dd/yamaha_keyboard_spare_parts.pdf
    • https://uploads.strikinglycdn.com/files/d48f52d1-8bf7-47b6-a6f2-e7ea873e5e54/los_7_habitos_de_la_gente_altamente_efectiva_resumen_power_point.pdf
    • http://xegukamadoso.epizy.com/android_emulator_mac_very_slow.pdf
    • http://pomolado.epizy.com/how_to_teach_conversational_english_online.pdf
    • http://temekem.epizy.com/mafewepufolutafomu.pdf
    • https://uploads.strikinglycdn.com/files/abe87f2c-5906-4caf-9a1d-7d2f05d98665/rogers_diffusion_of_innovation_theory_steps.pdf
    • http://dilabopitomosif.epizy.com/vmware_technical_account_manager_datasheet.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7d3.bin
5e1fac753492d8154703cfe5fa04149e8ef91b0a2fdd687a00de04ef8f1e33e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D3 9400 bytes
font_01_sfnt_off0000e6d3.bin
4bf2b4c130a29b4b19bfcab6ca735bae2f821694c5b00d6ced4fa89ea441abba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D3 5568 bytes
font_02_sfnt_off0000f9a0.bin
e8f6ad4f7d80dc8273c838d0e4a957c748cd5abb49c77511d5b39a9533cc8ccf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A0 9920 bytes
font_03_sfnt_off00011bb1.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB1 4324 bytes

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