Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a5d160dbe48a935…

MALICIOUS

PDF

83.5 KB Created: 2021-03-29 15:45:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 808fedf4edbcd9a11adf32f377848e91 SHA-1: 88e17af465fb78e7f8aa8d8e6c363be3db6145bf SHA-256: 2a5d160dbe48a935d744ae54086ccc74c2408c0453f4157198da829451c8eb42
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a URL designed to trick the user into downloading a malicious PDF. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of external URIs suggests an attempt to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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://xezojetit.ru/strik?utm_term=a+song+of+ice+and+fire+book+6+read+online
    • https://jawoxaze.weebly.com/uploads/1/3/0/9/130968973/611b94f9.pdf
    • http://trycabinets.xyz/guitar_chords_for_bookdc0nu.pdf
    • https://static.s123-cdn-static.com/uploads/4374984/normal_5fc9610889da4.pdf
    • http://santaparker.store/jeruriroj4r4bg.pdf
    • http://my-favshopf.online/hidden_objects_sims_4_ps4k6vb1.pdf
    • http://datifuxevewa.22web.org/fishing_weather_report_durban.pdf
    • http://bopolubolef.mywebcommunity.org/52057864722.pdf
    • https://zabavorurexezab.weebly.com/uploads/1/3/5/3/135314693/segolipusidufaz.pdf
    • http://kevebofuru.medianewsonline.com/panduan_belajar_bahasa_arab.pdf
    • https://jisasulozif.weebly.com/uploads/1/3/4/3/134371627/fanapojetivab.pdf
    • http://tijijosopake.22web.org/sibudutedekuvaruwo.pdf
    • http://sks-expertiza.ru/97031499052cjssj.pdf
    • http://bapipakaroxi.22web.org/avira_antivirus_2019.pdf
    • http://copyrights-notices-helps.com/99061358495rvzil.pdf
    • http://robot3.site/realm_grinder_wiki_research_buildsqyp4o.pdf
    • https://viwefinorix.weebly.com/uploads/1/3/0/8/130813514/mujede.pdf
    • https://cdn-cms.f-static.net/uploads/4475995/normal_5fd799fbeb95f.pdf
    • http://idealslimitalia-oficial.site/dark_sun_5e_2020jcuq0.pdf
    • https://cdn-cms.f-static.net/uploads/4454163/normal_60615bdb3cd54.pdf
    • https://puluzoxaxidu.weebly.com/uploads/1/3/2/6/132683087/2543560.pdf
    • http://trokot-roznica.xyz/amcon_act_20198umbq.pdf
    • https://static.s123-cdn-static.com/uploads/4447097/normal_60041c2e2efaf.pdf
    • https://static.s123-cdn-static.com/uploads/4448339/normal_5fc867a516c90.pdf
    • http://tezoxefakalexo.sportsontheweb.net/33316093340.pdf
    • http://linza.media/enlever_mauvais_oeil_avec_oeufyjbcl.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://woranuganavot.myartsonline.com/simpson_ms61043_pressure_washer_reviews_2018.pdf
    • http://pidezesu.rf.gd/kidde_smoke_alarm_model_1276_manual.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_off0001081e.bin
25aab6e840d35c8bf81a87ef18255edc58feb661f9d90f7e75a0d2b76c557680		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1081E 5536 bytes
font_01_sfnt_off00011b08.bin
5fb65aa5386e30aa35f29ef1e18d22cef8d571eb363c9a6343b1427db6225b1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B08 10884 bytes

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