Malicious PDF — malware analysis report

Static analysis result for SHA-256 c36df385ceadf906…

MALICIOUS

PDF

78.9 KB Created: 2021-03-28 20:42:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1efc632c0d029c9a18729c6c54ee972c SHA-1: 732339070b4c5fdd2881d2d3f25249f89ad8dfb4 SHA-256: c36df385ceadf90615a54d5df3c3178c587c501ef30530055199f9d9554b599b
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though partially corrupted, contains text related to a 'Liftmaster professional 1/3 hp remote not working', suggesting a lure for a technical support scam. The presence of multiple embedded URLs, including 'https://ponafet.ru/strik?utm_term=liftmaster+professional+1%252F3+hp+remote+not+working', strongly suggests these are used to redirect users to phishing or malware download sites. No scripts were extracted, but the overall structure and embedded URLs point to a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://ponafet.ru/strik?utm_term=liftmaster+professional+1%252F3+hp+remote+not+working
    • http://walolexokesufa.sportsontheweb.net/is_m5_faster_than_m3.pdf
    • https://fujuzelos.weebly.com/uploads/1/3/1/3/131380065/19b3f0e8e4e.pdf
    • https://cdn.sqhk.co/muwitajo/Tihilxk/dazalovumakiv.pdf
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdf
    • https://lisewaduw.weebly.com/uploads/1/3/4/3/134358893/xavopelozud-domikulosupim-rewevosufazaves-somadowekanuwuf.pdf
    • https://tamilavijunaw.weebly.com/uploads/1/3/4/5/134506647/dc698bb.pdf
    • http://arthromedro.xyz/burn_out_2017_parents_guide4i2jt.pdf
    • http://usene.xyz/62234283256gfcv1.pdf
    • https://cdn.sqhk.co/divojimo/hevOheA/9539572282.pdf
    • https://sejumajofejopib.weebly.com/uploads/1/3/2/7/132740214/vumizewo.pdf
    • http://stopnutristrike.ru/75878791711pu4d7.pdf
    • https://cdn.sqhk.co/lagidexetin/gZ2iehj/my_pro_mp3_player_2._3._0_apk.pdf
    • https://xudezilo.weebly.com/uploads/1/3/0/7/130739240/dulup.pdf
    • http://gesaribenufemi.iblogger.org/automorphic_forms_on_unitary_groups.pdf
    • http://gajikabe.iblogger.org/notacion_cientifica_suma_y_resta_ejercicios_resueltos.pdf
    • https://cdn.sqhk.co/kibizatududo/LQghwii/biratukofunedalujifazan.pdf
    • http://nosixavol.sportsontheweb.net/unidad_biopsicosocial.pdf
    • http://my-favshop.online/gibifakisifamavabopune12p7s.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://suzujikuluvujov.rf.gd/ziwad.pdf
    • http://kezupomevul.rf.gd/27153823418.pdf
    • http://sutolovulogava.rf.gd/15011190142.pdf
    • http://jepokigebi.epizy.com/36850412093.pdf
    • http://tumurubulofomam.rf.gd/statistical_rethinking.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_off0000f5f7.bin
609b8012f25533ee0e767949d14b222d511f50e7f874ac2c554b37c44a5a13fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F7 5664 bytes
font_01_sfnt_off00010939.bin
92f86f8a5fcb20775175e6e07eddfce18448e06d30b2f22236fe1f90afc74226		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10939 10872 bytes

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