Malicious PDF — malware analysis report

Static analysis result for SHA-256 2785ed92cdf75366…

MALICIOUS

PDF

79.4 KB Created: 2021-04-01 07:14:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a24504eba3349a8100cfaf904559c15 SHA-1: 7fa87ed56572cbd0e52a6aabcb14f5d412900879 SHA-256: 2785ed92cdf753665ee35cfd97b763bd8a0b27dd6f0cede0b43255d2ce185117
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document body contains text related to 'Vizio sound bar remote code att uverse', suggesting a lure. The presence of embedded URLs, including one pointing to 'seumenha.ru', indicates an attempt to redirect the user to a malicious site for further exploitation or phishing.

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://seumenha.ru/strik?utm_term=vizio+sound+bar+remote+code+att+uverse
    • https://cdn.sqhk.co/difejekexe/eAe2sge/tixedenijebapugove.pdf
    • http://tiluvopira.medianewsonline.com/13607191134.pdf
    • https://static.s123-cdn-static.com/uploads/4480886/normal_5fecc5a901953.pdf
    • http://besiditiduw.22web.org/wrong_turn_2_movie_in_tamil.pdf
    • http://fitatuvepejozo.sportsontheweb.net/95294769352.pdf
    • https://cdn.sqhk.co/tinulafi/mfjj761/electrical_conduit_fill_chart.pdf
    • http://ruzamaji.getenjoyment.net/72138824127.pdf
    • https://cdn.sqhk.co/xosuridasago/bjfoEjb/telabawexekagewosivezi.pdf
    • https://cdn.sqhk.co/repipedifavi/6jhtY4h/14942085023.pdf
    • http://tuwimig.scienceontheweb.net/viramewize.pdf
    • https://static.s123-cdn-static.com/uploads/4485010/normal_5ff23e98c35d9.pdf
    • https://cdn-cms.f-static.net/uploads/4375698/normal_5fd905aa6f03a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bidasumibave.epizy.com/biharwap._in_2017_movie_hd.pdf
    • http://memamawu.onlinewebshop.net/62723663807.pdf
    • https://uploads.strikinglycdn.com/files/d98c5c2f-b3d5-4f90-a91c-f5157359f643/nivokejateru.pdf
    • https://uploads.strikinglycdn.com/files/0b2e0971-fa6f-4250-9c2b-b0bb2c6a920c/24117440342.pdf
    • https://uploads.strikinglycdn.com/files/9fee0f04-d04d-4090-831f-d5d40df97591/beats_by_dre_powerbeats_pro_true-wireless_headphones_-_black.pdf
    • http://namakanexir.atwebpages.com/how_to_determine_energy_efficiency.pdf
    • http://xinifaduzinuvu.onlinewebshop.net/terms_in_computer_science.pdf
    • https://uploads.strikinglycdn.com/files/76bcf598-e28c-48f6-ab97-829798f09d0e/how_to_setup_a_fitbit_charge_hr.pdf
    • http://japinoxizidunub.myartsonline.com/fuvaliguwojofewixijofil.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_off0000f837.bin
fdc332e3052eb776369c3f557bfb7236439a1eadaa42d681504f811e24963f4c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF837 5268 bytes
font_01_sfnt_off00010a1a.bin
4b9d3a3986c7e520227c0fbd9d708692eb0bc8ca7b53099f341de1d60fab8bbc
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A1A 11112 bytes